Vintage Electronic Calculators: BE-CALC Home page
| (Brand on letter: M) | (AKA) | (Label on Back) | (Product Number) | (Year) |
| M.O.S.: 1225 |   |   |   |   |
| MACH: 2 |   |   |   | 1975 |
| MACH: 5 | ELECTRONIC CALCULATOR |   | 1975 | |
| MACH: 888 | SLIDE RULETTE |   |   | 197? |
| MACH: I | SLIDE RULETTE |   |   | 1972 |
| MACH: II | MINI CALCULATOR |   |   | 1973 |
| MACH: IV |   |   |   | 197? |
| MACH: V |   |   |   |   |
| MACH: VI | SLIDE RULETTE |   |   | 197? |
| MAGICLICK: 005 |   |   |   | 1976 |
| MAGICLICK: 015 |   |   |   | 1974 |
| MAGICLICK: 020 |   |   |   | 197? |
| MAGICLICK: 249 | regla de calculo |   |   | 197? |
| MAGICLICK: 280 | cientifica |   |   |   |
| MAGICLICK: 306 | PERSONAL |   |   | 197? |
| MAGICLICK: 343 | REGLA DE CALCULO |   |   |   |
| MAGICLICK: 350 | REGLA DE CALCULO |   |   | |
| MAGICLICK: 370 | financiera |   |   |   |
| MAGICLICK: 380 |   |   |   | 197? |
| MAGICLICK: 406 |   |   |   | 197? |
| MAGICLICK: 450 |   |   |   | 1974 |
| MAGICLICK: 455 |   |   |   | 197? |
| MAGICLICK: 480 | cientifica |   |   | 197? |
| MAGICLICK: 860 |   | calculadora electronica de mesa |   | 197? |
| MAGICLICK: 870 | financiera |   |   | 197? |
| MAGNON: (Unknown model) |   |   |   | 197? |
| MALLORY: (PC4008) |   |   |   | 197? |
| MALLORY: (PC4019) |   |   |   | ~1974 |
| MALLORY: (Unknown model) |   |   |   | 197? |
| MALLORY: AGS10 | AGS-10 |   |   | 197? |
| MALLORY: AGS9 (version-1) | AGS-9 |   |   | ~1975 |
| MALLORY: AGS9 (version-2) | AGS-9 |   |   | 1975 |
| MALLORY: MC35 |   |   |   |   |
| MANCAL: 732 |   |   |   | 197? |
| MANICA: 8 |   |   |   | 1973 |
| MANITA: 1 | manita-1 |   |   | 197? |
| MANNICS: 211TP |   |   |   |   |
| MANNICS: 301 |   |   |   | 197? |
| MANNICS: 303 (version-1) |   |   |   | 1975 |
| MANNICS: 303 (version-2) |   |   |   |   |
| MANNICS: 305 |   |   |   | ~1976 |
| MANNICS: 800 |   |   |   | 197? |
| MANNICS: 818 (version-1) |   |   |   | 197? |
| MANNICS: 818 (version-2) | MK-818 |   |   | 197? |
| MANNICS: 96 | ELECTRONIC CALCULATOR |   |   | 1976 |
| MANNICS: MDP1212 |   |   |   | 197? |
| MANNICS: MK800 |   |   |   | 197? |
| MANNICS: MK818 |   |   |   | 197? |
| MANNICS: MKF20 |   |   |   |   |
| MANNICS: MSR40 |   |   |   | 197? |
| MARCHANT: (See: SCM) |   |   |   |   |
| MARINER: NRC7200 |   |   |   | 1971 |
| MARKSMAN: Top |   |   |   |   |
| MARLIN: 1200 | SYSTEM 1200 ELECTRONIC CALCULATOR | MODEL #1200 |   | 197? |
| MARS CONFECTIONERY: m&m's (version-1) |   |   |   | 1999 |
| MARS CONFECTIONERY: m&m's (version-2) |   |   |   | 1993 |
| MARS CONFECTIONERY: m&m's (version-3) |   |   |   | 1997 |
| MARS CONFECTIONERY: m&m's (version-4) |   |   |   |   |
| MARS CONFECTIONERY: m&m's (version-5) |   |   |   |   |
| MARS CONFECTIONERY: m&m's (version-6) |   |   |   |   |
| MARUBENI: (See: MIIDA) |   |   |   |   |
| MARUMAN: (Calculighter): version-1 |   |   |   |   |
| MARUMAN: (Calculighter): version-2 |   |   |   |   |
| MARUMAN: (Calculighter): version-3 | HADSON, CALCULITER |   |   | |
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY: The Kitchen Whiz | Food Preparation /Conversion Computer |   |   |   |
| MASTER CALCULATOR COMPANY: A1 |   | Model No. A-1 |   | 197? |
| MASTER CALCULATOR COMPANY: AA |   |   |   |   |
| MASTER CALCULATOR COMPANY: AAA |   |   |   |   |
| MASTER CALCULATOR COMPANY: Executive |   |   |   | ~1971 |
| MASTER CALCULATOR COMPANY: H1 | Model No. H-1 |   | 1972 | |
| MASTER CALCULATOR COMPANY: I |   |   |   |   |
| MASTER CALCULATOR COMPANY: II |   |   |   |   |
| MASTER CALCULATOR COMPANY: Master |   |   |   |   |
| MASTER CALCULATOR COMPANY: Mini Master (version-1) |   |   |   | 1971 |
| MASTER CALCULATOR COMPANY: Mini Master (version-2) |   |   |   | 1971 |
| MASTER CALCULATOR COMPANY: Mini Mite |   |   |   |   |
| MASTER CALCULATOR COMPANY: V |   |   |   |   |
| MASTER: 154 |   | Electronic Calculator |   | 197? |
| MATAC: (Unknown model) |   |   |   | 197? |
| MATH MATIC: (See: AMERICAN CIRCUITRON INC.) | - |   |   |   |
| MATH: 2000M |   |   |   | 197? |
| MATHATRONICS: (Unknown Model 1) | (Opt. 28, Remote Unit) |   |   | ~1966 |
| MATHATRONICS: (Unknown Model 2) | (Opt. 29, Remote Unit) |   |   | ~1966 |
| MATHATRONICS: 4200-00 | PKB |   |   | 1968 |
| MATHATRONICS: 4200-01 | (CS-2, Central Station Single Trunk) |   |   | 1968 |
| MATHATRONICS: 4200-02 | (CS-2/PPC, Central Station Single Trunk with Page Printer Control) |   |   | 1968 |
| MATHATRONICS: 4200-03 | (CS-3, Simultaneous Central Station) |   |   |   |
| MATHATRONICS: 4210-00 (Mathwriter Keyboard Accoustical for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4210-01 (Mathwriter Keyboard Flattop for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4215-00 | (CS-1, Natural Language Calculator) |   |   |   |
| MATHATRONICS: 4215-00 |   |   |   | 1968 |
| MATHATRONICS: 4215-01 | (NLCL, Natural Language Logic Module) |   |   | 1968 |
| MATHATRONICS: 4215-02 (Single Track Buffer for 4200) | (STB) |   |   | 1968 |
| MATHATRONICS: 4215-03 (Single Track Buffer with P.P.C. for 4200) | (STC/PPC) |   |   | 1968 |
| MATHATRONICS: 4215-04 (16 Trunk Simultaneous Buffer for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4220-00 (Perforated Tape Reader for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4224-00 (Teletype Page Printer 8 1/2" for 4200) | (ASR33TY) |   |   | 1968 |
| MATHATRONICS: 4225-00 (Page Printer Control Unit for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4226-00 (XY-Plotter for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4227-00 (Expanded Memory for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4245-00 (Perforated Tape Punch for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4265-00 (Modem for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4275-00 (Automatic Telephone Pickup for 4200) | (Robosonic) |   |   | 1968 |
| MATHATRONICS: 4280 |   |   |   | ~1966 |
| MATHATRONICS: 4280-01 | (4280T) |   |   | ~1966 |
| MATHATRONICS: 4280-03 | (4280A/TC, Mathatron 4280A) |   |   | 1968 |
| MATHATRONICS: 4280-04 | (4280A/TY, Mathatron 4280A / Pin Feed) |   |   | 1968 |
| MATHATRONICS: 4280R | (Opt. 28, Remote Unit) |   |   | ~1966 |
| MATHATRONICS: 4400-24 (Paper Tape Punch/Reader and Page Printer) | (Opt. 24, PTP) |   |   | ~1966 |
| MATHATRONICS: 4400-27 | (Opt. 27, APS) |   |   | ~1966 |
| MATHATRONICS: 4400-32 | (Opt. 32, Dual Reader) |   |   | ~1966 |
| MATHATRONICS: 4410-01 (Mathatron Paper Tape for 4-24, 8-48) |   |   |   | 1968 |
| MATHATRONICS: 4410-02 (Page Printer Rolls for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-03 (Page Printer Rolls [Sprocket Feed] for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-04 (Perforator Tape [Paper] Buff for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-05 (Mylar Perforator Tape for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-06 (Mathatron Ribbons for 4-24, 8-48, 4280R) |   |   |   | 1968 |
| MATHATRONICS: 4410-07 (Page Printer Ribbons for 4280) |   |   |   | 1968 |
| MATHATRONICS: 4410-08 (Mathwriter Printer Paper for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-10 (Male Connectors/Couplers for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-12 (Female Connectors/Couplers for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-14 (Interconnector Cord 15 feet for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-16 (Interconnector Cord 25 feet for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4410-18 (Program Cards [10 Pad Carton] for 8-48) |   |   |   | 1968 |
| MATHATRONICS: 4410-20 (Program Cards [10 Pad Carton] for 4280) |   |   |   | 1968 |
| MATHATRONICS: 4410-22 (Program Cards [10 Pad Carton] for 4200-01) |   |   |   | 1968 |
| MATHATRONICS: 4410-24 (Program Cards [10 Pad Carton] for 4200-03) |   |   |   | 1968 |
| MATHATRONICS: 4424-00 | (4-24) |   |   | 1966 |
| MATHATRONICS: 4424-01 | (4-24PL, Power Log Pack) |   |   | ~1966 |
| MATHATRONICS: 4424-02 | (4-24T, Trig Pack) |   |   | ~1966 |
| MATHATRONICS: 4425-00 (Remote Coupler for 4200) |   |   |   | 1968 |
| MATHATRONICS: 4450-10 (Operating Manual for 4280A) |   |   |   | 1968 |
| MATHATRONICS: 4450-11 (Tape Set Instructions for 4280A) |   |   |   | 1968 |
| MATHATRONICS: 4450-20 (Operating Manual for 4200-01) |   |   |   | 1968 |
| MATHATRONICS: 4450-30 (Operating Manual: Page Printer Control for 4200-01) |   |   |   | 1968 |
| MATHATRONICS: 4450-40 (Operating Manual for Natural Language Calculator) |   |   |   | 1968 |
| MATHATRONICS: 4450-50 (Operating Manual for Perforated Tape Reader) |   |   |   | 1968 |
| MATHATRONICS: 4848-00 (version-1) | (8-48) | MATHATRON MODEL 8-48 |   | 1965 |
| MATHATRONICS: 4848-00 (version-2) |   |   |   | 1967 |
| MATHATRONICS: 4848-20 | (8-48PL, Power Log) |   |   | ~1966 |
| MATHATRONICS: 4848-21 | (8-48SII, Statistics Pac) |   |   | ~1966 |
| MATHATRONICS: 4848-22 | (8-48TII, Trig Pac) |   |   | ~1966 |
| MATHATRONICS: 4848-23 | (8-48C, Surveying Pac) |   |   | ~1966 |
| MATHATRONICS: 8-48APS (Auxiliary Program Storage for 4848-00) |   |   |   | 1966 |
| MATHATRONICS: 8-48C |   |   |   |   |
| MATHATRONICS: 8-48M (version-1) | (Mathematical) |   |   | ~1966 |
| MATHATRONICS: 8-48M (version-2) | (Mathematical) |   |   | ~1966 |
| MATHATRONICS: 8-48S | (Statistical Mod 1) |   |   | ~1966 |
| MATHATRONICS: 8-48SC | (Scientific) |   |   | ~1966 |
| MATHATRONICS: Mathatron |   |   |   |   |
| MATHATRONICS: Mathatron III |   |   |   | ~1968 |
| MATHATRONICS: Remote Tape Reader for 8-48 (version-1) | (Opt. 37, RTR) |   |   | 1966 |
| MATHATRONICS: Remote Tape Reader for 8-48 (version-2) | (RTR-A) |   |   | 1966 |
| MATHATRONICS: Remote Tape Reader for 8-48 (version-3) | (RTR-I) |   |   | 1966 |
| MATHBOOK: 806L | Auto Constant |   |   |   |
| MATHBOOK: 817L | Memory |   |   |   |
| MATHIPUTER: (See: CYBERNETICS SYSTEMS) |   |   |   |   |
| MATHIX: 1200SR |   |   |   | ~1980 |
| MATHIX: 1500 |   |   |   |   |
| MATHIX: 1502 |   |   |   | ~1980 |
| MATHIX: 2002 |   |   |   | ~1980 |
| MATHIX: 2002TON |   |   |   | 1983 |
| MATHIX: 2100 | MEMO COMPUTER 2100 |   |   |   |
| MATHIX: 2500 |   |   |   | ~1980 |
| MATHIX: 2800 |   |   |   | ~1980 |
| MATHIX: 400A (version-1) | LERNRECHNER | 034/207 | 1978 | |
| MATHIX: 400A (version-2) |   |   | 027/340 | 1978 |
| MATHIX: 900 |   |   |   | 1977 |
| MATHIX: Alarm |   |   |   | ~1980 |
| MATHIX: BJ21M | BJ-21M |   |   | 197? |
| MATHIX: Mini Card |   |   |   | ~1980 |
| MATHIX: Mini Card S |   |   |   | ~1980 |
| MATHIX: SR10 |   |   |   | 1983 |
| MATHIX: SR2 |   |   |   | ~1980 |
| MATHMATIC: S666 | S-666 |   |   |   |
| MATHMATIC: S888 |   |   |   |   |
| MATHMATIC: S999 | S-999 | MODEL S-999 |   | 197? |
| MATSUSHITA: (See: PANASONIC) |   |   |   |   |
| MATTEL: Diet Trac |   |   |   |   |
| MATTEL: Horse Race Analyzer |   |   |   | 1979 |
| MATTEL: JR Ewing |   |   |   | 197? |
| MAX: PD122M |   |   |   | 197? |
| MAYFAIR SOUNDS PRODUCTS: 2Q11B (Adaptor 117VAC->6VDC 200mA) | POWER SUPPLY, MODEL 2Q11B |   |   |   |
| MAYFAIR SOUNDS PRODUCTS: 2W01B |   |   |   | ~1973 |
| MAYFAIR SOUNDS PRODUCTS: XL1000 | xl 1000 | MODEL NO. XL-1000 |   | 197? |
| MB (Milton Bradley): 5 | Logic 5 |   |   | 1978 |
| MB (Milton Bradley): Comp IV |   |   |   | 1978 |
| MB (Milton Bradley): Pythaligoras |   |   |   | 1978 |
| MBO: (Unknown model 1) |   |   |   | 1974 |
| MBO: (Unknown model 2) |   |   | 3754 |   |
| MBO: 1 (Sigma 1) (version-1) |   |   | 542 | 197? |
| MBO: 1 (Sigma 1) (version-2) |   |   | 542 | 1974 |
| MBO: 10 (Alpha 10) (version-1) |   |   | 508 | 1975 |
| MBO: 10 (Alpha 10) (version-2) |   |   |   | 1975 |
| MBO: 10 (Conti 10) |   |   | 582 | 1976 |
| MBO: 10 (Delta 10) |   |   |   | 1979 |
| MBO: 10 (Exact 10) |   |   |   | 1978 |
| MBO: 10 (Formel 10) |   |   |   |   |
| MBO: 10 (Sigma 10) |   |   |   |   |
| MBO: 100 | Profi 100 |   | 5200 | 1985 |
| MBO: 1000 (version-1) | alpha 1000 |   |   |   |
| MBO: 1000 (version-2) | Profi 1000 |   | 5603 | 1985 |
| MBO: 1000-1 | alpha 1000-1 |   |   | 1978 |
| MBO: 1007DP | DUAL POWER CALCULATOR, Diplomat 1007DP |   |   |   |
| MBO: 100PD | MICRO 100PD |   |   |   |
| MBO: 100TP |   | Modell Profi 100 TP | 0671 |   |
| MBO: 102 (version-1) | Alpha 102 Solar, Scientific Calculator |   |   |   |
| MBO: 102 (version-2) | Visit CARD 102 | Visit-Card 102, Elektronenrechner, Bestell-Nummer 0678 | 0678 |   |
| MBO: 1041PD | 1041 PD |   |   |   |
| MBO: 1045PD | 1045 PD |   |   |   |
| MBO: 1052PD | 1052 PD |   |   |   |
| MBO: 1063PD |   |   |   |   |
| MBO: 10S | CAL 10S |   |   |   |
| MBO: 110T | Alpha 110T |   |   |   |
| MBO: 12 (Formel 12) | FORMEL 12 | FORMEL 12, Elektronenrechner, ELECTRONIC CALCULATOR | 5?99 | 1982 |
| MBO: 1200K |   |   |   |   |
| MBO: 1202M | ELECTRONIC CALCULATOR |   |   |   |
| MBO: 120PD | MICRO 120PD |   |   |   |
| MBO: 1210M | MODEL: MBO-1210M |   | ~1973 | |
| MBO: 121MR | 121-MR | Modell: 121-MR | 527 | 1977 |
| MBO: 1241PD |   |   |   |   |
| MBO: 1242PD | 1242 PD |   |   |   |
| MBO: 1244PD | 1244 PD |   |   |   |
| MBO: 1245PD | 1245 PD |   |   |   |
| MBO: 1246PD | 1246 PD |   |   | ~1994 |
| MBO: 1252PD | 1252 PD |   |   |   |
| MBO: 1270PDR | 1270 PDR |   |   |   |
| MBO: 1280PD | 1280 PD |   |   |   |
| MBO: 12GD | Profi 12GD |   |   |   |
| MBO: 12PD |   |   |   |   |
| MBO: 1421PD | 1421 PD |   |   |   |
| MBO: 150PD | MICRO 150PD, ELECTRONIC PRINTING CALCULATOR |   | 5704 | 1985 |
| MBO: 1700DP | DUAL POWER CALCULATOR, Diplomat |   |   |   |
| MBO: 18 | FORMEL 18 |   | 5106 |   |
| MBO: 180PD | MICRO 180 PD, ELECTRONIC PRINTER |   |   |   |
| MBO: 19 | Formel 19 |   |   | 1985 |
| MBO: 190PD | MICRO 190 PD, ELECTRONIC PRINTING CALCULATOR |   |   |   |
| MBO: 1950PD | 1950 PD |   |   |   |
| MBO: 1970PD |   |   |   |   |
| MBO: 1975PD |   |   |   |   |
| MBO: 1980PD |   |   |   |   |
| MBO: 2 (Delta 2) |   |   |   | 197? |
| MBO: 2 (Sigma 2) |   |   |   |   |
| MBO: 20 (Alpha 20) (version-1) |   |   |   | 1975 |
| MBO: 20 (Alpha 20) (version-2) |   |   | 0509 | ~1975 |
| MBO: 20 (Conti 20) |   | Elektronenrechner, Modell: Conti 20 | 0523 | 1976 |
| MBO: 20 (Delta 20) |   |   | 0623 | ~1978 |
| MBO: 20 (Exact 20) |   |   | 0646 | 1978 |
| MBO: 20 (Exact 20V) |   |   |   |   |
| MBO: 20 (Monarch 20) |   |   |   | 1975 |
| MBO: 20 (Sigma 20) |   |   |   | 1975 |
| MBO: 2000 | alpha 2000 |   | 0597 | 1976 |
| MBO: 2002W | QUARTZ-ZEIT-COMPUTER |   |   | 197? |
| MBO: 2003W |   | Elektronenrechner, Modell: MBO 2003W | 0632 | 1978 |
| MBO: 200PD | Micro 200PD |   | 5209 | 1983 |
| MBO: 2050WA |   |   |   | ~1980 |
| MBO: 208 | Visit CARD 208 |   | 5148 |   |
| MBO: 25 | FORMEL 25 |   | 5046 | 1980 |
| MBO: 2500KBS | 2500 KBS |   |   |   |
| MBO: 30 (Alpha 30) (version-1) | Elektronenrechner, Modell: alpha 30 | 0510 | 1975 | |
| MBO: 30 (Alpha 30) (version-2) |   |   | 0510 | 1975 |
| MBO: 30 (Delta 30) (version-1) |   |   |   | 1978 |
| MBO: 30 (Delta 30) (version-2) |   |   |   | 1978 |
| MBO: 30 (Exakt 30) (version-1) |   |   |   | 1979 |
| MBO: 30 (Exakt 30) (version-2) |   |   |   | 1979 |
| MBO: 30 (Monarch 30) |   |   |   | 1975 |
| MBO: 300 | SOLAR POWER, Profi 300 |   | 5400 | 1985 |
| MBO: 3000 | Elektronenrechner, Modell: MBO 3000 | 0519 | 1977 | |
| MBO: 3000 (Alpha 3000) | Elektronenrechner, Modell: alpha 3000 | 0598 |   | |
| MBO: 300PD | Micro 300 PD |   |   |   |
| MBO: 3010 (version-1) |   |   | 0652 | 1978 |
| MBO: 3010 (version-2) | Elektronenrechner, Electronic Calculator | 0652 | 1978 | |
| MBO: 3050 (version-1) |   |   | 0679 | 1978 |
| MBO: 3050 (version-2) | Modell 3050, Elektronenrechner | 0679 | 1978 | |
| MBO: 308 | Profi 308, Electronic Calculator |   | 56005 | 1982 |
| MBO: 33 | Formel 33 |   |   |   |
| MBO: 4 | delta4 |   |   |   |
| MBO: 40 (Delta 40) | DELTA 40, Elektronenrechner | 0644 | 1978 | |
| MBO: 40 (Exact 40) |   |   |   | 197? |
| MBO: 40 (Formel 40) |   |   |   |   |
| MBO: 4000 (version-1) | alpha 4000 |   |   | 1977 |
| MBO: 4000 (version-2) | LIQUID CRYSTAL, alpha 4000 |   |   | 1985 |
| MBO: 4001 | alpha 4001 |   |   | ~1980 |
| MBO: 44T | FORMEL 44T |   |   |   |
| MBO: 4506 |   |   |   | 197? |
| MBO: 4512 |   |   |   | 197? |
| MBO: 50 (Alpha 50) |   |   |   | 1976 |
| MBO: 50 (Delta 50) |   |   |   | 197? |
| MBO: 50 (Exact 50) |   |   |   | 197? |
| MBO: 500 | Profi 500 |   | 5500 | 1985 |
| MBO: 5000 | alpha 5000 |   | 0658 | 1979 |
| MBO: 5001 | LIQUID CRYSTAL, alpha 5001 |   |   |   |
| MBO: 502 | Alpha 502 |   |   | 1978 |
| MBO: 51 | alpha 51 |   |   |   |
| MBO: 52 | alpha 52 |   |   | 197? |
| MBO: 570 | Handy 570 |   |   |   |
| MBO: 6000 | ALPHA 6000, LIQUID CRYSTAL |   | 504 | 1983 |
| MBO: 604 | ALPHA 604, Technisch-wissenschaftlicher, Elektronenrechner-programmierbarn |   | 5272 | 1985 |
| MBO: 60LC | Exakt 60LC |   |   | 1979 |
| MBO: 610PR (version-1) | ALPHA 610 PR |   |   |   |
| MBO: 610PR (version-2) | ALPHA 610 PR | Taschenrechner, Pocket Calculator, Calculatrice de poch... | 5599 | 1982 |
| MBO: 70 (version-1) | alpha 70 |   |   | 197? |
| MBO: 70 (version-2) | alpha 70 |   |   |   |
| MBO: 8 | CAL 8 | Elektronenrchner, Modell: CAL 8 | 606 | 197? |
| MBO: 80 | mini handy 80 |   |   | 197? |
| MBO: 800 (version-1) |   | Elektronenrechner, Modell: 800 |   | 1974 |
| MBO: 800 (version-2) | Profi 800 |   | 5602 | 1985 |
| MBO: 8000 | ALPHA 8000 |   |   |   |
| MBO: 8002X | 8002 X | Elektronenrechner, MODEL MBO 8002X | 0517 | 1975 |
| MBO: 8003M (version-1) |   |   |   | 1977 |
| MBO: 8003M (version-2) | Elektronenrechner, MODEL MBO 8003M |   | 1975 | |
| MBO: 800DX | 800 DX |   |   | 1974 |
| MBO: 800M | 800 M | Elektronenrechner, Modell: 800M |   | 1973 |
| MBO: 801MR |   |   |   | 1975 |
| MBO: 802 | ALPHA 802 |   | 5088 | 1985 |
| MBO: 80D | MINI HANDY 80D | Elektronenrechner |   | 197? |
| MBO: 80DX |   |   | 0519 |   |
| MBO: 80M (version-1) | mini handy 80M |   | 0531 | 1974 |
| MBO: 80M (version-2) | mini handy 80M | mini handy 80M |   |   |
| MBO: 80R | mini handy 80R |   |   | 1974 |
| MBO: 80SCF |   |   | 0528 | 1975 |
| MBO: 810 | 10-DIGIT, profi 810, Hi-power Solar Calculator |   |   |   |
| MBO: 816MP |   |   |   | 197? |
| MBO: 820PR | Alpha 820PR, Programmable Scientific |   |   |   |
| MBO: 82PR | Alpha 82PR, Scientific Calculator |   |   |   |
| MBO: 830N | 830 N |   | 0504 | 1975 |
| MBO: 830ND |   |   |   | 1975 |
| MBO: 833ND (version-1) |   | Elektronenrechner, Modell: 833ND | 0505 | 1976 |
| MBO: 833ND (version-2) |   |   |   | 1975 |
| MBO: 837MD | Elektronenrechner, Modell: 837MD |   | 1975 | |
| MBO: 838MD (version-1) |   |   |   | 1975 |
| MBO: 838MD (version-2) | Elektronenrechner, Modell: 838MD |   |   | |
| MBO: 838MD (version-3) |   |   | 0507 | 1976 |
| MBO: 850CD | MICRO, MODELL 850CD |   |   | 197? |
| MBO: 855P | MICRO | Modell: 855P | 0515 | 1973 |
| MBO: 86 |   |   |   | 197? |
| MBO: 880 | MODEL 880 | Elektronenrechner |   | ~1978 |
| MBO: 882 |   |   |   | 1991 |
| MBO: 900 | Profi 900 |   |   |   |
| MBO: 9000 | ALPHA 9000 |   | 5010 | 1985 |
| MBO: 903 | ALPHA 903 |   | 5503 | 1984 |
| MBO: 905SB | NIGHT AND DAY, ALPHA 905 SB |   | 5502 | 1985 |
| MBO: 916 (Adaptor) |   |   |   |   |
| MBO: A20 | Exclusiv A20 |   | 0549 |   |
| MBO: Akkord I |   |   |   |   |
| MBO: Akkord II |   |   | 0650 | 1978 |
| MBO: Akkord III |   | Elektronenrechner | 0690 | 1975 |
| MBO: Akkord VI |   |   | 5004 | 1977 |
| MBO: Alpha |   |   |   | 1974 |
| MBO: Alpha I: (See: SC40) |   |   |   |   |
| MBO: Alpha III |   |   |   | 1976 |
| MBO: B32 | Big Number |   |   |   |
| MBO: Beta |   |   |   | 197? |
| MBO: BETA LC100 |   |   |   | 197? |
| MBO: Biolator | Elektronenrechner, Modell: Biolator | 0525 | 1976 | |
| MBO: Businessman |   | Elektronenrechner, Electronic Calculator, Calculatrice électronique | 5680 |   |
| MBO: BV62 (Adaptor) |   |   |   |   |
| MBO: BV79 (Adaptor) |   |   |   | ~1976 |
| MBO: Card Royal |   |   | 5049 | 1985 |
| MBO: Card Royal SL |   |   | 5096 | 1985 |
| MBO: Classic I (version-1) |   |   | 0566 | 1977 |
| MBO: Classic I (version-2) |   |   | 0566 | 1977 |
| MBO: Classic I (version-3) |   |   |   | 1977 |
| MBO: Classic II (version-1) |   |   | 0567 | 197? |
| MBO: Classic II (version-2) |   |   | 0531 | 1979 |
| MBO: Classic III (version-1) |   |   | 0568 | 197? |
| MBO: Classic III (version-2) |   |   |   | 197? |
| MBO: Classic III (version-3) |   |   |   | 197? |
| MBO: Classic IV |   |   | 0569 | 197? |
| MBO: Classic V |   | Modell: Classic V | 0587 | 197? |
| MBO: Comet |   |   |   | 197? |
| MBO: Comet I (version-1) | Elektronenrechner, Modell: COMET I |   | 197? | |
| MBO: Comet I (version-2) |   |   |   | 197? |
| MBO: Comet II |   |   | 0681 | 1975 |
| MBO: Compu Quartz | COMPU-QUARTZ |   | 0611 | 1978 |
| MBO: Concorde I (version-1) |   |   |   | 1975 |
| MBO: Concorde I (version-2) | Elektronenrechner, Modell: Concorde I | 0559 | 1975 | |
| MBO: Concorde I (version-3) |   |   |   | ~1975 |
| MBO: Concorde II |   | Modell: Concorde II | 0560 | 1975 |
| MBO: Concorde III (version-1) |   |   | 0561 | ~1975 |
| MBO: Concorde III (version-2) |   |   |   | ~1975 |
| MBO: Concorde IV |   |   | 0562 | 1976 |
| MBO: Concorde V | Elektronenrechner, Modell: Concorde V | 0573 | ~1975 | |
| MBO: Consul (version-1) |   |   |   | 1972 |
| MBO: Consul (version-2) |   |   |   | ~1972 |
| MBO: Conti |   |   | 0527 | 1975 |
| MBO: CT530 |   |   |   |   |
| MBO: CX40 | MONARCH CX 40 | Elektronenrechner | 0629 | 197? |
| MBO: CX50 | MONARCH CX 50 |   |   | 1976 |
| MBO: CX60 | MONARCH CX 60 |   | 0661 | 1977 |
| MBO: DC630 (Adaptor) | AC ADAPTOR, PART DC-630 |   |   |   |
| MBO: De Luxe |   |   |   | ~1975 |
| MBO: De Luxe I | de Luxe I | Elektronenrechner, MODEL: De Luxe I |   | 1975 |
| MBO: De Luxe II | de Luxe II |   |   | 1975 |
| MBO: De Luxe III (version-1) | de Luxe III |   |   | 1975 |
| MBO: De Luxe III (version-2) | de Luxe III |   |   | 1975 |
| MBO: De Luxe IV | de Luxe IV |   |   | 1976 |
| MBO: De Luxe V | de Luxe V |   |   | 1975 |
| MBO: Derby |   |   |   | 197? |
| MBO: Derby I |   |   |   | 1975 |
| MBO: Derby II (version-1) |   |   |   | ~1975 |
| MBO: Derby II (version-2) |   |   |   | 1975 |
| MBO: Derby III |   |   |   | 1975 |
| MBO: Diplomat | DUAL POWER CALCULATOR | Pocket calculator . solar and battery Taschenre... | 54421 |   |
| MBO: Diplomat I |   |   | 0590 | 1976 |
| MBO: Diplomat II |   |   | 0591 | 1976 |
| MBO: Diplomat III |   |   |   | 197? |
| MBO: Diplomat V |   |   | 0593 | 197? |
| MBO: EC8413 | MICRO ALGEBRA, EC-8413 | MODEL 8413 |   | 1973 |
| MBO: ESR817 (version-1) | ESR-817 | ELECTRONIC SLIDE RULE, Model: ESR-817 |   | ~1974 |
| MBO: ESR817 (version-2) | ESR-817 |   |   | 1976 |
| MBO: Exclusive I |   |   |   | 197? |
| MBO: Executive |   |   | 5038 | ~1980 |
| MBO: Expert |   |   |   | 1974 |
| MBO: Fashion |   |   |   | 1980 |
| MBO: FN8D | FN-8D | Elektronenrechner, MODEL FN-8D | 0501 | 1976 |
| MBO: Formel II |   |   | 0638 | 1979 |
| MBO: Formel III |   |   |   |   |
| MBO: FX102 | fx-102 | Elektronenrechner, Modell: Fx-102 |   | 1975 |
| MBO: FX19 | fx-19 | CASIO fx-19 |   | 1976 |
| MBO: FX21 | fx-21 |   |   | 1977 |
| MBO: Gamma |   |   |   | 1974 |
| MBO: Handy |   | Elektronenrechner, Modell: HANDY | 0570 | 197? |
| MBO: Junior (version-1) |   |   |   | 1973 |
| MBO: Junior (version-2) |   |   |   | 1973 |
| MBO: Junior (version-3) |   |   |   | 1973 |
| MBO: K80W | MODEL K-80W |   | 1973 | |
| MBO: L0832 | Elektronenrechner, Modell: MBO L-0832 | 0558 | 1976 | |
| MBO: Las Vegas |   |   | 7004 | 1982 |
| MBO: LC1040 |   |   | 5140 | 1980 |
| MBO: LC110 |   |   |   |   |
| MBO: LC128 | LC 128 |   | 5214 | 1985 |
| MBO: LC2000 | LQUID CRYSTAL |   | 0551 | 1977 |
| MBO: LC2008WA | LC 2008 WA, LIQUID CRYSTAL |   | 0502 | 1980 |
| MBO: LC2014WA |   |   |   | 1978 |
| MBO: LC2020 | LIQUID CRYSTAL SUPER SLIM |   |   |   |
| MBO: LC2050WA | LC 2050 WA, LIQUID CRYSTAL CALCULATOR | LC 2050 WA, Elektronenrechner, Electronic Calculator | 5025 | 1982 |
| MBO: LC79VC | Liquid Crystal |   |   | 1980 |
| MBO: LC800 | LC 800 |   | 0518 | 1978 |
| MBO: LC8040SP |   |   |   |   |
| MBO: LC8050 |   |   |   |   |
| MBO: LC8090SP | LC 8090 SP, solar calculator | LC8090SP, Solarrechner, Solar calculator, Calculatrice Solaire | 5016 | 1985 |
| MBO: LC820 | LIQUID CRYSTAL |   |   |   |
| MBO: LC858 | Liquid Crystal |   |   | 1981 |
| MBO: LC900 | LC 900 |   | 5047 | 1980 |
| MBO: LC920 (version-1) | Elektronenrechner, Electronic Calculator, Calculatrice electronique | 5213 | ~1985 | |
| MBO: LC920 (version-2) | Fashion |   |   | ~1985 |
| MBO: LC920 (version-2: Kit) |   |   |   | ~1985 |
| MBO: LC920G | Fashion |   |   | ~1985 |
| MBO: LC930 | LC 930, LIQUID CRYSTAL |   |   |   |
| MBO: LC940 | LC 940 | LC 940, Elektronenrechner, Electronic Calculator | 5?24 | ~1980 |
| MBO: LC960 | LC 960, Continuous Memory, Auto shut off |   | 5243 | 1985 |
| MBO: LC9600 | LC 9600 | LC 9600 |   |   |
| MBO: LCC8080 | SOLAR POWER CALCULATOR WITH CLOCK, LCC 8080 |   |   |   |
| MBO: LCC8085 (version-1) | 8 DIGIT DESK CALCULATOR, HIGH POWER CELL, LCC 8085, SOLAR |   | 5600 | 1985 |
| MBO: LCC8085 (version-2) | 8 DIGIT DESK CALCULATOR, HIGH POWER CELL, LCC 8085, SOLAR |   | 5601 | 1985 |
| MBO: LCD007 |   |   |   | ~1980 |
| MBO: LCD11 |   |   | 5003 | 1983 |
| MBO: LCD2300 |   |   | 5153 | 1981 |
| MBO: LCD3030 |   |   |   |   |
| MBO: LCD4 |   |   |   |   |
| MBO: LCD53 |   | LCD-53, Elektronenrechner, Electronic Calculator | 5083 |   |
| MBO: LCD8 | LCD-8 |   | 5035 |   |
| MBO: LCR125 |   |   |   |   |
| MBO: LCR135SP | LCR 135SP |   |   | 1982 |
| MBO: M801 |   |   |   | 197? |
| MBO: Mach II |   |   |   |   |
| MBO: Manager |   |   |   | 1975 |
| MBO: Master |   |   |   | 1973 |
| MBO: Match calculator |   |   |   |   |
| MBO: Match calculator clock |   |   |   | 1989 |
| MBO: MBO |   |   |   | 1975 |
| MBO: MC35 |   |   |   |   |
| MBO: MC40 | Executiv-Card, MC 40 |   | 5009 | 1985 |
| MBO: MC50 | MC 50 | Elektronenrechner, Electronic Calculator | 5027 | 1982 |
| MBO: MC600 | MC 600 | MBO MC-600 |   | 1973 |
| MBO: MK65 | de Luxe |   |   | 1983 |
| MBO: MK85 (version-1) | de Luxe, MK 85 |   | 5132 | 1983 |
| MBO: MK85 (version-2) | de Luxe, MK 85 | ELEKTRONENRECHNER, ELECTRONIC CALCULATOR | 5131 | 1983 |
| MBO: Monarch EX40 | MONARCH EX40 |   |   |   |
| MBO: Monarch I (version-1) |   |   |   | 1975 |
| MBO: Monarch I (version-3) |   | Elektronenrechner, Modell: MONARCH I | 0613 | 1976 |
| MBO: Monarch II |   |   |   | 197? |
| MBO: MR4110 (version-1) |   |   | 5229 | 1985 |
| MBO: MR4110 (version-2) |   |   | 5093 | 1985 |
| MBO: MR609 |   |   | 5290 | 1985 |
| MBO: MR610 | MR 610 |   | 5295 | 1985 |
| MBO: MR800M |   |   |   | 197? |
| MBO: N1010AL | ELECTRONIC CALCULATOR |   |   |   |
| MBO: PD002LC | PD-002LC | PD-002LC, Elektronenrechner |   |   |
| MBO: PD400 | PD-400 |   | 5009 |   |
| MBO: Pelo I (version-1) |   | Elektronenrechner, Modell: Pelo 1 | 0537 | 1974 |
| MBO: Pelo I (version-2) |   | Elektronenrechner, Modell: Pelo I | 0537 |   |
| MBO: Pfiffikus |   |   | 5023 | 1983 |
| MBO: Pocket Print |   |   |   | 1979 |
| MBO: R100 | ATLAS R100 |   |   | 1975 |
| MBO: R1000 | ATLAS R1000 |   |   | 197? |
| MBO: R1050L | LIQUID CRYSTAL, ATLAS R 1050 L |   |   |   |
| MBO: R200 | ATLAS R200 |   |   | 1976 |
| MBO: R2000 | ATLAS R2000 |   |   | 197? |
| MBO: R300 | ATLAS R300 |   | 0656 |   |
| MBO: R3000 | ATLAS R3000 |   |   |   |
| MBO: R300A | ATLAS R300A |   |   | 197? |
| MBO: Rechen-Trainer (version-1) |   |   | 0670 | 1977 |
| MBO: Rechen-Trainer (version-2) |   |   | 0670 | 1977 |
| MBO: S0816 | SCIENTIFIC MODEL S-0816 |   |   | 197? |
| MBO: SC10 | SC 10, SLIDE RULE |   |   | 1976 |
| MBO: SC30 | SC 30 |   |   | 1975 |
| MBO: SC40 (version-1) | (Alpha I) |   |   | 1975 |
| MBO: SC40 (version-2) | (Alpha I) | SC-40 SCIENTIFIC CALCULATOR |   | 1974 |
| MBO: SC50 | SC 50 |   |   |   |
| MBO: SC60 | (Alpha II) |   |   | 1976 |
| MBO: SC6010 | MODEL SC-6010, SCIENTIFIC STATISTIC CALCULATOR |   | 197? | |
| MBO: Secretary |   |   | 0520 | 1976 |
| MBO: Sigma |   |   | 0526 | 1974 |
| MBO: SL I | SL I | Elektronenrechner | 0583 | 197? |
| MBO: SL II | SL II |   |   | 1978 |
| MBO: SL520 | SL 520, solar calculator |   | 5050 | 1985 |
| MBO: SL800 | SL 800, solar calculator |   | 5029 | 1985 |
| MBO: SL850SB | SL 850 SB, NIGHT AND DAY |   | 5306 | 1985 |
| MBO: SLR10 | SLR 10 |   | 5030 | 1985 |
| MBO: SM818M |   |   |   | 197? |
| MBO: SP10 | SOLAR SP10 |   | 5168 | 1985 |
| MBO: SP100 | SOLAR POWER CALCULATOR |   |   |   |
| MBO: SP38 | SP 38 |   | 5401 | 1985 |
| MBO: SP65 | SP 65 |   |   |   |
| MBO: SP91 | SP 91, SOLAR CELL CALCULATOR |   | 5407 |   |
| MBO: SP91G |   |   |   |   |
| MBO: SP96 | SP 96, solar calculator |   | 5403 | 1985 |
| MBO: SP97 | SP 97 |   |   |   |
| MBO: SP9700 | SP 9700, solar calculator |   |   |   |
| MBO: SP9800 | SP 9800 |   | 5410 |   |
| MBO: SSC13 | MEMO, ELECTRONIC CALCULATOR |   |   |   |
| MBO: Top Manager | SOLAR POWER ELECTRONIC CALCULATOR, top manager, 12 DIGIT |   |   | 198? |
| MBO: TR108SB | TR 108 SB, solar dual-power |   | 5606 | 1985 |
| MBO: TR10SB | TR 10 SB, solar dual-power |   | 5605 | 1985 |
| MBO: TR110SB | TR 110 SB, solar dual-power |   | 5608 | 1985 |
| MBO: TR1200K |   |   |   |   |
| MBO: TR1201 |   |   |   |   |
| MBO: TR1201LC | TR 1201 LC | Elektronenrechner, Electronic Calculator |   |   |
| MBO: TR1210 |   |   |   | 1974 |
| MBO: TR1220MR | TR 1220 MR |   |   |   |
| MBO: TR125MR | TR-125MR |   |   |   |
| MBO: TR129MR |   |   |   |   |
| MBO: TR12M (version-1) | TR-12M | Elektronenrechner, Modell: TR-12M |   | 1974 |
| MBO: TR12M (version-2) | TR-12M |   | 0640 |   |
| MBO: TR12PPM |   |   |   | 1975 |
| MBO: TR12PPS |   |   |   | 1975 |
| MBO: TR130MR | TR 130 MR |   |   |   |
| MBO: TR600 | TR-600 |   |   | 197? |
| MBO: TR800 |   |   |   | 197? |
| MBO: TR800K |   |   |   |   |
| MBO: TR80H |   |   |   |   |
| MBO: TR80M (version-1) | TR-80M |   |   | 1975 |
| MBO: TR80M (version-2) | TR-80M |   |   | 1973 |
| MBO: TR80M (version-3) | TR-80M |   |   |   |
| MBO: TR816MP |   |   |   | 1974 |
| MBO: TR81M | TR-81M |   |   | 197? |
| MBO: TR851MR | TR-851MR |   | 0609 |   |
| MBO: TR85M | TR-85M |   |   |   |
| MBO: TR8SB | TR 8 SB, solar dual-power |   | 5607 | 1985 |
| MBO: TRS1000 | TRS 1000 |   |   | ~1976 |
| MBO: TRS1010PD | TRS 1010 PD, PRINTING CALCULATOR |   | 5700 | 1985 |
| MBO: TRS1030PD | TRS 1030 PD |   |   |   |
| MBO: TRS1050PD | TRS 1050 PD |   | 5006 | 1985 |
| MBO: TRS1060PD | TRS 1060PD |   |   |   |
| MBO: TRS1215PD | TRS 1215 PD |   | 5701 | 1985 |
| MBO: TRS1230PD | TRS 1230 PD |   |   | ~1984 |
| MBO: TRS1250PD | TRS 1250 PD |   | 5007 | 1985 |
| MBO: TRS1270PD | TRS 1270 PD |   | 5702 | 1985 |
| MBO: TRS1280PD | TRS 1280 PD | TRS-1280PD | 5017 |   |
| MBO: TRS1300 | TRS 1300 |   |   | ~1976 |
| MBO: TRS1300P | TRS 1300P |   | 0601 | ~1977 |
| MBO: TRS1300PCR | TRS 1300PCR |   |   | ~1979 |
| MBO: TRS1350PCR | TRS 1350PCR |   |   | ~1979 |
| MBO: TRS1350PD | TRS 1350PD |   |   | ~1978 |
| MBO: TRS1400 | TRS 1400 |   |   | 197? |
| MBO: TRS1400PCR | TRS 1400PCR |   |   | ~1980 |
| MBO: TRS1450PD | TRS-1450PD | TRS-1450PD, Elektronenrechner | 0668 | ~1983 |
| MBO: TRS1500PD |   |   | 0694 |   |
| MBO: TRS1550PD | TRS-1550PD |   |   | ~1980 |
| MBO: TRS1720PD | TRS 1720PD |   |   | ~1979 |
| MBO: TRS1720PDC |   |   |   |   |
| MBO: TRS1820PD | TRS 1820 PD |   |   |   |
| MBO: TRS1900PD |   |   |   |   |
| MBO: TRS1920PD |   |   |   | 1985 |
| MBO: TRS1950PD | TRS 1950 PD |   | 5703 | 1985 |
| MBO: TRS2000PCR | TRS 2000 PCR |   |   | 1985 |
| MBO: TRS2000PD | TRS 2000 PD |   | 0695 | ~1979 |
| MBO: TRS2000PDC | TRS 2000 PDC |   | 5084 | 1985 |
| MBO: TRS3000PD | TRS 3000 PDC |   |   |   |
| MBO: TRS720PD | TRS 720PD |   |   |   |
| MBO: TRS724PD |   |   |   |   |
| MBO: Turbo | solar dual-power |   | 5405 | 1985 |
| McCLANAHAN: Calculator Book |   |   |   | 1991 |
| MCM (Micro Computer Machines): MCM800 |   |   |   | 1978 |
| MCO: (Unknown Model) | ELECTRONIC CALCULATOR |   |   | 1975 |
| MCO: QI515 |   |   |   | ~1974 |
| MCO: QI564 |   |   |   | ~1974 |
| MCT: MCT550 |   |   |   | 1977 |
| MD: (See: LALTEX & CO.) |   |   |   |   |
| MEGATONE: (See: IWATINI & CO.) |   |   |   |   |
| MEGO CORP: Star Trekulator | ST101A |   |   | 1977 |
| MEIR: 880 |   |   |   | ~1978 |
| MELCOR: 1000 |   | MODEL 1000 |   |   |
| MELCOR: 1100 |   |   |   |   |
| MELCOR: 360 |   |   |   | ~1973 |
| MELCOR: 370 |   |   |   | 1974 |
| MELCOR: 380 (version-1) |   |   |   | ~1973 |
| MELCOR: 380 (version-2) |   | MODEL 380 |   | 1973 |
| MELCOR: 380 (version-3) | MODEL 380 |   | ~1973 | |
| MELCOR: 380 (version-4) |   | ANWERMATH M-8 |   | ~1973 |
| MELCOR: 390 (version-1) |   |   |   | 1973 |
| MELCOR: 390 (version-2) |   | MODEL 390 |   | 1973 |
| MELCOR: 392 |   | MODEL 392 |   | 197? |
| MELCOR: 400 |   | MODEL 400 |   | 1973 |
| MELCOR: 480 |   |   |   | 1974 |
| MELCOR: 50 | Maximus 50 |   |   |   |
| MELCOR: 500 |   |   |   | 197? |
| MELCOR: 550 (version-1) |   |   |   | 197? |
| MELCOR: 550 (version-2) |   | MODEL 550 |   | 197? |
| MELCOR: 590 | MODEL 590 |   | 197? | |
| MELCOR: 655 |   |   |   | 1975 |
| MELCOR: 670 |   |   |   | 1974 |
| MELCOR: 747 |   |   |   | 197? |
| MELCOR: 888 |   |   |   |   |
| MELCOR: Compu-tech X |   |   |   |   |
| MELCOR: SC535 | SC-535 | MODEL SC-535 |   | 1974 |
| MELCOR: SC600 |   |   |   | 1974 |
| MELCOR: SC615 | SC-615 |   |   | 1974 |
| MELCOR: SC630 | SC-630 |   |   | 197? |
| MELCOR: SC635 (version-1) |   |   |   | ~1974 |
| MELCOR: SC635 (version-2) | SC-635 | MODEL SC-635 |   | 1974 |
| MELCOR: SC645 (version-1) | SC-645 |   |   | 197? |
| MELCOR: SC645 (version-2) | SC-645 |   |   | 197? |
| MELCOR: SC650 |   |   |   |   |
| MELCOR: SR8 | ANSWERMATH SR8 |   |   | ~1974 |
| MEMORY DEVICES: 808MD | MEMORY 808MD |   |   | 1974 |
| MEMORY DEVICES: ESR817 | ESR-817 |   |   | ~1974 |
| MEMORY MASTER: (See: ELECTRONIC RESOURCES) |   |   |   |   |
| MERA-ELWRO: (See: ELWRO) | - |   |   |   |
| MERCASONIC: RJBC8D |   |   |   |   |
| MERCURY: 2600 |   |   |   |   |
| MERCURY: D28 | MODEL D 28 |   | 197? | |
| MERIDIA: 804 | MEMORY 804 |   |   | 197? |
| MERR-ELWRO: (See: ELWRO) |   |   |   |   |
| METRONIC LABORATORIES: M55 (version-1) | EXECUCAL |   |   | 1973 |
| METRONIC LABORATORIES: M55 (version-2) | EXECUCAL |   |   | 1973 |
| METZ: Metz |   |   |   | 1992 |
| MICRO INSTRUMENTATION & TELEMETRY SYSTEMS: (See: MITS) |   |   |   |   |
| MICROCIFRA: (See: FATE) | - |   |   |   |
| MICROLITH: 111 (version-1) |   |   |   | 197? |
| MICROLITH: 111 (version-2) | MODEL NO. 111 |   |   | |
| MICROLITH: 112 | MEMORY |   |   | 197? |
| MICROLITH: 113G | MEMORY 4 | MODEL NO. 113G |   |   |
| MICROLITH: 205 | SCIENTIFIC |   |   | 1974 |
| MICROLUX: (See: WINDERT) | - |   |   |   |
| MIDILUX: 9516DP | MICRO THERMAL PRINTER |   |   |   |
| MIIDA ELECTRONICS: 1200P | MODEL 1200P, LISTED CALCULATOR 399C |   |   | |
| MIIDA ELECTRONICS: 1202PD |   |   |   |   |
| MIIDA ELECTRONICS: 1212PD |   |   |   | 197? |
| MIIDA ELECTRONICS: 1217P |   |   |   |   |
| MIIDA ELECTRONICS: 1255P | model 1255 | 399C |   | 197? |
| MIIDA ELECTRONICS: 12P |   | MODEL 12P |   | 197? |
| MIIDA ELECTRONICS: 2020P |   | MODEL 2020P |   | 197? |
| MIIDA ELECTRONICS: 606 | ELECTRONIC CALCULATOR |   | 197? | |
| MIIDA ELECTRONICS: 8 |   |   |   | 1973 |
| MIIDA ELECTRONICS: 808 | automatic constant |   |   | 1973 |
| MIIDA ELECTRONICS: 809 |   |   |   | 1974 |
| MIIDA ELECTRONICS: 828 |   |   |   | 1974 |
| MIIDA ELECTRONICS: 838 |   |   |   | 1975 |
| MIIDA ELECTRONICS: 988 |   |   |   | 1976 |
| MIIDA ELECTRONICS: AC100 (Adaptor) |   |   |   |   |
| MIIDA ELECTRONICS: MC1213P |   |   |   |   |
| MIIDA ELECTRONICS: MC1214 |   |   |   | 1972 |
| MIIDA ELECTRONICS: MC2001 | mc 2001 |   |   | 197? |
| MIIDA ELECTRONICS: MC2002 | mc 2002 |   |   | 197? |
| MIIDA ELECTRONICS: MC2208 | mc 2208 | MODEL mc 2208 |   | 197? |
| MIIDA ELECTRONICS: MC2212 | mc 2212 |   |   |   |
| MIIDA ELECTRONICS: MC3000 | mc 3000 |   |   |   |
| MIIDA ELECTRONICS: MC800 |   |   |   | 1971 |
| MIIDA ELECTRONICS: MC830 | MC 830 |   |   | 197? |
| MIIDA ELECTRONICS: MC830K | MC 830K |   |   | 197? |
| MIIDA ELECTRONICS: MC838 |   | MODEL MC 838 |   | 197? |
| MIIDA ELECTRONICS: MC840 | MODEL MC 840 |   | 1972 | |
| MIIDA ELECTRONICS: MC855M |   |   |   | 1975 |
| MIIDA ELECTRONICS: MC868M |   |   |   | 1975 |
| MIIDA ELECTRONICS: MC918 |   | MODEL MC 918 |   | 1976 |
| MIIDA ELECTRONICS: MC988 | MC 988 |   |   | 1976 |
| MIKE: 3030 |   |   |   |   |
| MIKROELEKTRONIK: SR1 | Schulrechner |   |   |   |
| MINERVA: 825 |   |   |   |   |
| MINI MITE: I | Mini-Mite I |   |   |   |
| MINICOM: 8 | EXECUTIVE 8 |   |   | 197? |
| MINIPET: (Unknown model, version-1) |   |   |   |   |
| MINIPET: (Unknown model, version-2) |   |   |   |   |
| MINIPET: 82MD |   |   |   | 197? |
| MINIPET: V16 |   |   |   | 197? |
| MINIPET: V2 |   |   |   | 197? |
| MINIREX: (See: RFT) |   |   |   |   |
| MINITRON: 811 |   |   |   |   |
| MINOLTA: Minolcom |   |   |   | 1971 |
| MINSUNG ELECTRONICS: (See: MINTRON) |   |   |   |   |
| MINTRON: 802DG |   |   |   |   |
| MINTRON: 806D |   | electronic calculator |   | 1976 |
| MINTRON: 809D |   |   |   | 197? |
| MINTRON: 809DG |   |   |   | 1976 |
| MINTRON: 812D |   |   |   |   |
| MINTRON: 822DR |   |   |   |   |
| MINTRON: 825MD |   |   |   | 197? |
| MINTRON: 829ND |   | electronic calculator |   | ~1974 |
| MINTRON: 830D |   |   |   |   |
| MINTRON: 830ND |   |   |   |   |
| MINTRON: 832D |   |   |   |   |
| MINTRON: 832ND |   |   |   |   |
| MINTRON: 835MDR |   |   |   |   |
| MINTRON: 836D |   |   |   |   |
| MINTRON: 836MDR |   |   |   | 197? |
| MINTRON: 842D | electronic calculator |   |   | |
| MINTRON: 845D |   | electronic calculator |   |   |
| MINTRON: 892D |   |   |   | 197? |
| MINTRON: 895D | electronic calculator |   | 1975 | |
| MINTRON: ESR817 | ESR-817 | ELECTRONIC SLIDE RULE |   | 1974 |
| MINTRON: ESR817D (version-1) | ESR-817D |   |   | 1976 |
| MINTRON: ESR817D (version-2) | ESR-817D |   |   | 1976 |
| MINTRON: M1205D |   |   |   |   |
| MINTRON: MD12M | MD-12M |   |   | 197? |
| MINTRON: S812D |   |   |   |   |
| MIRACAL: (See: PD LABS) |   |   |   |   |
| MIRACLE: II | Miracle II |   |   | 197? |
| MITS (Micro Instrumentation & Telemetry Systems): 1206 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 1209 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 1212 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 1230 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 1240 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 1436MR |   |   |   | ~1974 |
| MITS (Micro Instrumentation & Telemetry Systems): 1440 |   |   |   | 1972 |
| MITS (Micro Instrumentation & Telemetry Systems): 150 |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 605M |   |   |   |   |
| MITS (Micro Instrumentation & Telemetry Systems): 7400A |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 7400B |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 7400C |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 7440 | Scientific Calculator |   |   | 1974 |
| MITS (Micro Instrumentation & Telemetry Systems): 816 |   |   |   | 1972 |
| MITS (Micro Instrumentation & Telemetry Systems): 816A |   |   |   | 1972 |
| MITS (Micro Instrumentation & Telemetry Systems): 816B |   |   |   | 1972 |
| MITS (Micro Instrumentation & Telemetry Systems): 905M |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 908DM |   |   |   |   |
| MITS (Micro Instrumentation & Telemetry Systems): 908M |   |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): 941M | METRIC CONVERTER |   |   | 1973 |
| MITS (Micro Instrumentation & Telemetry Systems): P7440 (version-1) | Programmer |   |   | 1974 |
| MITS (Micro Instrumentation & Telemetry Systems): P7440 (version-2) | Programmer |   |   |   |
| MITS (Micro Instrumentation & Telemetry Systems): PX7440 | Programmer and Expander |   |   | 1974 |
| MITS (Micro Instrumentation & Telemetry Systems): X7440 | Expander |   |   | 1974 |
| MITSUBISHI: (See: DENON) |   |   |   |   |
| M-OFFICE: 20SR |   |   |   | 1975 |
| M-OFFICE: 250 |   |   |   |   |
| M-OFFICE: 28SR | MODEL 28SR |   |   | 1975 |
| M-OFFICE: 300 |   |   |   | ~1981 |
| M-OFFICE: 33SR | Model 33SR Slide Rule Calculator |   | 197? | |
| M-OFFICE: 450 |   |   |   |   |
| M-OFFICE: 500 |   |   |   |   |
| M-OFFICE: 6SL |   |   |   | 197? |
| M-OFFICE: 800P |   |   |   | 197? |
| M-OFFICE: ESR100 |   |   |   | ~1981 |
| M-OFFICE: ESR110 |   |   |   | ~1981 |
| M-OFFICE: ESR120 | ELECTRONIC CALCULATOR, ESR-120 |   |   |   |
| M-OFFICE: JSR10 |   |   |   | ~1981 |
| M-OFFICE: JSR121 |   |   |   | ~1981 |
| M-OFFICE: JSR20 |   |   |   |   |
| M-OFFICE: LC20 |   |   |   | ~1981 |
| M-OFFICE: LC22 |   |   |   | ~1981 |
| M-OFFICE: LC82 |   |   |   | ~1981 |
| M-OFFICE: LC84 |   |   |   | ~1981 |
| M-OFFICE: LC86 |   |   |   |   |
| M-OFFICE: LC88 |   |   |   | ~1981 |
| M-OFFICE: LC90 |   |   |   | ~1981 |
| M-OFFICE: LC92 | ELECTRONIC CALCULATOR | ELECTRONIC CALCULATOR |   | 198? |
| M-OFFICE: LCW23 |   |   |   | ~1981 |
| M-OFFICE: LCW30 |   |   |   | ~1981 |
| M-OFFICE: SL672 | SL 672, HI-POWER solar calculator |   |   |   |
| M-OFFICE: SR12 | SR 12 | AUTO SHUT OFF LIQUID CRYSTAL ELECTRONIC CALCULATOR |   | 198? |
| MONARCH: (Unknown model) |   |   |   | ~1978 |
| MONARCH: 80 | STUDENT 80, Algebraic Hierarchy, School Calculator |   |   |   |
| MONARCH: 800C |   |   |   | 1975 |
| MONARCH: 810 |   |   |   | 197? |
| MONARCH: 892W (version-1) |   |   |   | 197? |
| MONARCH: 892W (version-2) |   |   |   | 197? |
| MONARCH: 895M |   |   |   | 197? |
| MONARCH: L0831T | L-0831T |   | 1976 | |
| MONARCH: SR892 |   |   |   | 197? |
| MONDIMAT: (Unknown model 1) |   |   |   | ~1978 |
| MONDIMAT: (Unknown model 2) |   |   |   | ~1978 |
| MONDIMAT: (Unknown model 3) |   |   |   | ~1978 |
| MONDIMAT: ER8095 | ER 8095 |   |   | ~1978 |
| MONDIMAT: LC106 | CARD CLOCK CALCULATOR, LC 106 |   |   | ~1980 |
| MONDIMAT: LC125 |   |   |   |   |
| MONDIMAT: LC2100 | LC 2100, LIQUID CRYSTAL CALCULATOR |   |   | 1979 |
| MONDIMAT: LC303 | ETUDIANT SCIENTIFIC, LC 303 |   |   | ~1979 |
| MONDIMAT: LC304 | ADVANCED SCIENTIFIC CALCULATOR |   |   | ~1979 |
| MONDIMAT: LC80A | LC 80A |   |   | 198? |
| MONDO CHRON: LCD55 |   |   |   | 1980 |
| MONROE: 10 | MONROE-LITTON: 10 | MODEL 10 |   | 1970 |
| MONROE: 1125 |   |   |   |   |
| MONROE: 115 | LANE/MONROE |   |   |   |
| MONROE: 1220 |   |   |   | 1972 |
| MONROE: 1260 |   |   |   |   |
| MONROE: 1260W2 |   |   |   |   |
| MONROE: 1265 |   |   |   |   |
| MONROE: 1265W1 |   |   |   |   |
| MONROE: 1266 |   |   |   |   |
| MONROE: 1272 | MODEL 1272 |   | 197? | |
| MONROE: 1276 |   |   |   |   |
| MONROE: 1277 |   |   |   |   |
| MONROE: 1305 |   |   |   |   |
| MONROE: 1310 |   |   |   |   |
| MONROE: 1310-3 |   |   |   |   |
| MONROE: 1320-1 |   |   |   |   |
| MONROE: 1330 | MODEL 1330, ELECTRONIC PRINTING CALCULATOR |   | 1972 | |
| MONROE: 1330-1 |   |   |   | 1972 |
| MONROE: 1330-2 |   |   |   | 1972 |
| MONROE: 1330-3 |   |   |   | 1972 |
| MONROE: 1330-4 |   |   |   | 1972 |
| MONROE: 1340 |   |   |   | 1972 |
| MONROE: 1340-1 |   |   |   | 1972 |
| MONROE: 1340-2 |   |   |   | 1972 |
| MONROE: 1340-3 |   |   |   | 1972 |
| MONROE: 1340-4 |   |   |   | 1972 |
| MONROE: 1340-5 |   |   |   | 1972 |
| MONROE: 1340-6 |   |   |   | 1972 |
| MONROE: 1340-7 |   |   |   | 1972 |
| MONROE: 1350 |   |   |   | 1972 |
| MONROE: 1350-1 |   |   |   | 1972 |
| MONROE: 1350-2 |   |   |   | 1972 |
| MONROE: 1350-3 |   |   |   | 1972 |
| MONROE: 1350-4 |   |   |   | 1972 |
| MONROE: 1350-5 |   |   |   | 1972 |
| MONROE: 1405 |   |   |   | 1976 |
| MONROE: 1410 | Litton MONROE | MODEL 1410, ELECTRONIC PRINTING CALCULATOR |   | ~1976 |
| MONROE: 1420 |   |   |   |   |
| MONROE: 1430 | LITTON MONROE | MODEL 1430 |   | 1975 |
| MONROE: 1440 |   |   |   |   |
| MONROE: 1450 |   |   |   |   |
| MONROE: 1610 |   |   |   | 1971 |
| MONROE: 1650 |   |   |   | ~1971 |
| MONROE: 1651 |   |   |   | 1971 |
| MONROE: 1652 |   |   |   | ~1971 |
| MONROE: 1655 |   |   |   | 1971 |
| MONROE: 1656 | MODEL 1656-W1 |   | ~1971 | |
| MONROE: 1660 |   |   |   | ~1971 |
| MONROE: 1665 |   |   |   | 1970 |
| MONROE: 1665W1 |   |   |   |   |
| MONROE: 1666 |   |   |   | ~1974 |
| MONROE: 1710 |   |   |   |   |
| MONROE: 1765 | Surveyor Prog. Printing Calculator |   |   | 1971 |
| MONROE: 1766 | Surveyor |   |   |   |
| MONROE: 1770 |   |   |   |   |
| MONROE: 1775 |   |   |   |   |
| MONROE: 1776 |   |   |   |   |
| MONROE: 1785 |   |   |   |   |
| MONROE: 1800 |   |   |   |   |
| MONROE: 1810 |   |   |   |   |
| MONROE: 1830 |   |   |   |   |
| MONROE: 1830A |   |   |   |   |
| MONROE: 1860 | MONROE-LITTON: 1860 |   |   | 1974 |
| MONROE: 1880 |   |   |   | 1972 |
| MONROE: 1920 | MONROE-LITTON: 1920 |   |   | 1974 |
| MONROE: 1930 | MONROE-LITTON | MODEL 1930 |   | 1974 |
| MONROE: 20 | MONROE-LITTON: 20 | MODEL 20 |   | 1972 |
| MONROE: 2000 | EPIC 2000 |   |   | 1965 |
| MONROE: 2020 |   |   |   |   |
| MONROE: 210M | Mini |   |   | 1980 |
| MONROE: 2120 |   |   |   |   |
| MONROE: 2125 |   |   |   |   |
| MONROE: 212M | Kompakt |   |   | 1980 |
| MONROE: 2145 | MODEL 2145 |   | 198? | |
| MONROE: 227P | Sprint |   |   |   |
| MONROE: 270M |   |   |   | 1980 |
| MONROE: 2715 | LITTON MONROE 2715 | MODEL 2715, ELECTRONIC PRINTING CALCULATOR |   |   |
| MONROE: 2725 | LITTON MONROE 2725 | MODEL 2725, ELECTRONIC PRINTING CALCULATOR |   |   |
| MONROE: 2735 | MODEL 2735 |   |   | |
| MONROE: 273M |   |   |   | 1980 |
| MONROE: 275M |   |   |   | 1980 |
| MONROE: 28 |   |   |   |   |
| MONROE: 2801 |   |   |   |   |
| MONROE: 2805 | LITTON MONROE 2805 |   |   |   |
| MONROE: 280M |   |   |   | 1980 |
| MONROE: 2810 |   |   |   |   |
| MONROE: 2820 |   |   |   |   |
| MONROE: 2830 | LITTON MONROE 2830 | MODEL 2830, ELECTRONIC PRINTING CALCULATOR |   |   |
| MONROE: 283M |   |   |   |   |
| MONROE: 2850 |   |   |   | 1980 |
| MONROE: 2860 |   |   |   |   |
| MONROE: 2865 |   |   |   | 198? |
| MONROE: 2880 | MONROE-LITTON 2880 | MODEL 2880 |   | 1979 |
| MONROE: 2890 |   |   |   |   |
| MONROE: 30 | Litton MONROE 30 | MODEL 30 |   | 1973 |
| MONROE: 300 (I/O writer) |   |   |   |   |
| MONROE: 3000 | EPIC 3000 | MODEL 611PR001 |   | 1966 |
| MONROE: 3080 |   |   |   |   |
| MONROE: 3090 |   |   |   |   |
| MONROE: 310 (Data Coupler) |   |   |   |   |
| MONROE: 3140 |   | MODEL 3140, ELECTRONIC PRINTING CALCULATOR |   |   |
| MONROE: 3150 |   |   |   |   |
| MONROE: 3180 | TRADER II |   |   |   |
| MONROE: 3190 |   |   |   |   |
| MONROE: 324 | MONROE-LITTON: 324 Statistician |   |   |   |
| MONROE: 325 | Scientist |   |   | 1976 |
| MONROE: 326 | MONROE-LITTON: 326, Scientist |   |   | 1976 |
| MONROE: 344 | Statistician |   |   |   |
| MONROE: 350 (I/O writer) |   |   |   |   |
| MONROE: 354 | Surveyor |   |   | 197? |
| MONROE: 360 | MONROE-LITTON: 360 |   |   |   |
| MONROE: 360/65 | 360/65 Bond Trader |   |   |   |
| MONROE: 392 (Tape device) |   |   |   |   |
| MONROE: 395 (Telprinter Interface) |   |   |   |   |
| MONROE: 40 | Litton MONROE 40 | MODEL 40 |   | 1974 |
| MONROE: 410 |   | MODEL 410, ELECTRONIC DISPLAY CALCULATOR |   | ~1973 |
| MONROE: 4130 |   |   |   |   |
| MONROE: 4140 |   |   |   |   |
| MONROE: 415 | Litton MONROE | MODEL 415, ELECTRONIC DISPLAY CALCULATOR |   | ~1973 |
| MONROE: 4150 |   |   |   |   |
| MONROE: 420 (version-1) |   |   |   | ~1973 |
| MONROE: 420 (version-2) | LITTON MONROE 420 | MODEL 420 |   | ~1973 |
| MONROE: 425 |   | MODEL 425, ELECTRONIC DISPLAY CALCULATOR |   | ~1973 |
| MONROE: 430 |   |   |   | ~1973 |
| MONROE: 440 |   | MODEL 440, ELECTRONIC DISPLAY CALCULATOR |   | ~1973 |
| MONROE: 473M |   |   |   | 198? |
| MONROE: 5130 |   |   |   |   |
| MONROE: 5140 |   |   |   |   |
| MONROE: 525 |   | MODEL: 525 |   |   |
| MONROE: 610 |   | MODEL 610 |   | 1971 |
| MONROE: 620 (version-1) |   |   |   | 1972 |
| MONROE: 620 (version-2) |   |   |   | 1971 |
| MONROE: 630 |   |   |   |   |
| MONROE: 640 |   |   |   | 1972 |
| MONROE: 650 |   |   |   | 1972 |
| MONROE: 725M |   |   |   |   |
| MONROE: 730 |   |   |   | 1968 |
| MONROE: 735M |   |   |   |   |
| MONROE: 740 |   |   |   | 1968 |
| MONROE: 770 (version-1) |   |   |   | 1968 |
| MONROE: 770 (version-2) |   |   |   | 1968 |
| MONROE: 820A | 820 |   |   |   |
| MONROE: 88 | Classmate 88 |   |   |   |
| MONROE: 900 (Diskette) |   |   |   |   |
| MONROE: 920 |   |   |   | 1970 |
| MONROE: 925 |   |   |   | 1970 |
| MONROE: 950 |   |   |   | 1970 |
| MONROE: 98 | MONROE-LITTON: 98 | MODEL: 98 |   | 1973 |
| MONROE: 99 |   |   |   | 1973 |
| MONROE: 990 | MODEL 990 |   | 1970 | |
| MONROE: 990A |   |   |   |   |
| MONROE: Agent |   |   |   |   |
| MONROE: BC1 (Adaptor) | BC-1, QUICK CHARGE BATTERY CHARGER |   |   |   |
| MONROE: BC6 (Adaptor) |   |   |   | ~1972 |
| MONROE: CR1 (Punched Card Reader) |   | MODEL CR-1 |   |   |
| MONROE: CR2 (Mark Sense Card Reader) | CR-2 |   |   |   |
| MONROE: D1650A |   |   |   |   |
| MONROE: Epic |   |   |   |   |
| MONROE: JD30 |   |   |   |   |
| MONROE: LCC/60 |   |   |   | ~1977 |
| MONROE: M108 |   |   |   | 1980 |
| MONROE: M110 |   |   |   | 1980 |
| MONROE: M112 | Litton, M 112 LIQUID CRYSTAL CALCULATOR |   |   | ~1982 |
| MONROE: M1220 |   |   |   | 1980 |
| MONROE: Model One | model ONE |   |   | 197? |
| MONROE: PL1 (Plotter) |   |   |   |   |
| MONROE: PL2 (Plotter) | Litton MONROE PL-2 | MODEL PL2 |   |   |
| MONROE: Trader | Litton, (1980) | MODEL MONROE TRADER, ELECTRONIC DISPLAY CALCULATOR |   | 1978 |
| MONTE CARLO: (Unknown model 1) |   |   |   | 197? |
| MONTE CARLO: (Unknown model 2) |   |   |   | 197? |
| MONTE CARLO: (Unknown model 3) |   |   |   | 197? |
| MONTEDISON: (See: IME) |   |   |   |   |
| MONTEVERDI: E402 |   |   |   | 197? |
| MONTEVERDI: E409 |   |   |   |   |
| MONTEVERDI: U605 |   |   |   | 197? |
| MONTGOMERY WARD: 67-8658 (Adaptor) |   |   |   |   |
| MONTGOMERY WARD: D10P | electronic DP10, (TXI8648A) |   |   | 1974 |
| MONTGOMERY WARD: D12K | electronic D12K | Model No TXI-8649A |   | 1974 |
| MONTGOMERY WARD: D8F | electronic D8F | Model No TXI-8647A |   | 1973 |
| MONTGOMERY WARD: D8K | Electronic D8K |   |   | 197? |
| MONTGOMERY WARD: EBN6910 | PRINTING CALCULATOR PD 10X | WARDS PRINTING DISPLAY CALCULATOR |   |   |
| MONTGOMERY WARD: I | ELECTRONIC I | ELECTRONIC I |   | 1973 |
| MONTGOMERY WARD: P10 (version-1) | WARDS P-10, Model No. DNS-8678A | U542 | 1974 | |
| MONTGOMERY WARD: P10 (version-2) |   |   |   |   |
| MONTGOMERY WARD: P100 | (TXI8661A) |   |   | 1974 |
| MONTGOMERY WARD: P130 | WARDS P130 |   | DAN-8668A | 1975 |
| MONTGOMERY WARD: P200 | Model number TXI8662A |   | 1973 | |
| MONTGOMERY WARD: P201 | P201 MEMORY CALCULATOR | DAN-8659A | 197? | |
| MONTGOMERY WARD: P202 | WARDS P-202, SLIDE RULE CALCULATOR | DAN8656-B | 1976 | |
| MONTGOMERY WARD: P300 | Model number TXI-8663A |   | 1974 | |
| MONTGOMERY WARD: P330 | SCIENTIFIC CALCULATOR, (DAN8665A) |   |   | 1976 |
| MONTGOMERY WARD: P50 | WARDS P-50, Model No. DNS-8660A |   | 1974 | |
| MONTGOMERY WARD: P60 | (GLE8692A) |   |   | 197? |
| MONTGOMERY WARD: P800 | electronic P800 | Model No.TXI8642A |   | 1973 |
| MONTGOMERY WARD: P8F | electronic P8F | Model No. TXI-8644A |   | 19730801 |
| MONTGOMERY WARD: P8M | electronic 8PM, (TXI8646A) |   |   | 19730820 |
| MONTGOMERY WARD: P8P | electronic P8P | Model No. TXI-8645A |   | 1974 |
| MONTGOMERY WARD: P90 | ELECTRONIC P90 | WARDS P-90 |   | 1974 |
| MORSE ELECTROPHONIC: CAL801 (version-1) | MODEL CAL-801 |   | 1972 | |
| MORSE ELECTROPHONIC: CAL801 (version-2) | MODEL CAL-801 |   | 1972 | |
| MORSE INTERNATIONAL: 8 | Morse 8 |   |   | 1973 |
| MOSTEK: CheckMaster |   |   |   |   |
| MPI: 350 (version-1) |   | MODEL 350 |   | 197? |
| MPI: 350 (version-2) | MODEL 350 |   | 1976 | |
| MPI: 360 |   |   |   |   |
| MUDEN: (See: ULTIMA ELECTRONICS) |   |   |   |   |
| MUFF: CO1300 | MUFF I |   |   |   |
| MULTICAL: (Unknown model) |   |   |   | 197? |
| MUSTANG: 3000 |   |   |   | 1980 |
| MVB: 403D |   |   |   | 197? |
| MVB: 800D | Model ER250 |   |   |   |
| MVB: C8 |   | ELECTRONIC HANDY CALCULATOR |   | 197? |
|   |   |   |   |   |
| 13-may-2013: (1014 Devices with letter M). |   |   |   |   |
|   |   |   |   |   |
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