Manufacturer: BUSICOM
Model: 100DA
AKA: exec 100-DA
Year: 1972
Display: Gas Disharge (10+1)
Circuits: TEXAS INSTRUMENTS: TMS0106
Dimensions: 241x169x68 mm
Power type: 110/220V
Origin:  
S/N:  
Owner: Many thanks to:
JANSSENS André from Belgium for the info.

 

Case: 
Color case: 
Color keyboard: 
Weight: 
Voltage selection: 
Power consumption: 
Working conditions: 
Printed Circuit Boards (PCB's): 
Memories: 
Memories indication: 
Prog. steps: 
Decimal point handling: 
 
Rounding: 
 
Calculation overflow indication: 
Input overflow indication: 
Divide by Zero indication: 
Square root of negative value indication: 
Negative value indication: 
Auto constant function by pressing twice: 
Auto Power-off: 
Display details: 
Keyboard details: 
Printer: 
Printer roll: 
Printer inkt-ribbon: 
Extra features/remarks: 
 

Initial price: 
Overall quality rate (1-10): 
OEM-copies: 
Other sources of info: 
Advertisements/Publications: 


Grey.
Grey.
1100 g

2 W
0 to 40 degrees C




The decimal point is floating or fixed selectable
to '0-1-2-3-4-5-6'-positions. 
The functions of round off, or truncate, are selectable by
means of a switch on the keyboard.












For calculations having a constant factor,
setting the switch to 'K' eliminates the need of entering the constant
for each step of the calculation after the first entry of the constant factor.


PRIVILEG (Univ Greifswald)
DATAMATH, TOUT Nigel
-

 

Example

Operation

Result

3.21+2.589-1.2

[Decimal Point switch]=Fixed,
[C] 3.21 [+=] 2.589 [+=] 1.2 [-=]

4.599

25x4.23x-5.23

[Decimal Point switch]=Fixed,
25 [X] 4.23 [X] 5.23 [-=]

-553.0725

15/-123/980

[Decimal Point switch]=Fixed,
15 [division] 123 [-=] [division] 980 [+=]

0.00012444

3 raising to power 8

[Decimal Point switch]=Fixed, [K Switch]=On
3 [X] [+=] [+=] [+=] [+=] [+=] [+=] [+=]

 6561

Constant calculation:
123x45
123x-3.2
123x0.987

[Decimal Point switch]=Fixed, [K Switch]=On
123 [X] 45 [+=]
3.2 [-=]
0.987 [+=]


5535
-393.6
121.401

Constant calculation:
5400/360
45000/360
99000/360

[Decimal Point switch]=Fixed, [K Switch]=On
5400 [division] 360 [+=]
45000 [+=]
99000 [+=]


15
125
275

((9x8-27)/6)+12.34

[Decimal Point switch]=F
9 [X] 8 [+=] 27 [-=] [division] 6 [+=] 12.34 [+=]
19.84

7/9

[Decimal Point switch]=4, [Switch up right]=5/4
7 [division] 9 [+=]
0.7778

1.1111x2x3.4

[Decimal Point switch]=4, [Switch up right]=N(Arrow up)
1.1111 [X] 2 [X] 3.4 [+=]
7.5556