Manufacturer: DENON (NIPPON COLUMBIA COMPANY)
Model: DEC61A4
AKA:  
Year: 1969
Display: Nixie (14+1)
Circuits: Combination Discrete components / I.C.'s
Dimensions: 390x298x100 mm
Power type: 220V
Origin: Japan
S/N:  
Owner: DEVIDTS Serge

 

Feature  

Description 

Case:  

 

Color case:  

 

Color keyboard:  

 

Weight:  

 

Voltage selection:  

 

Adapter:  

 

Power consumption:  

 

Working condition:  

 

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:  

 

Constant function:  

 

Calculation speed:  

 

Auto Power-off:  

 

Display details:  

 

Printer:  

 

Extra features/remarks:  

 

Initial price:  

 

Overall quality rate (1-10):  

 

OEM-copies:  

 

Other sources of info:  

 

Advertisements/Publications:  

 

 


Keyboard ^
1. Negative indication
2. Memory Recall
3. Constant
4. Multiplication
5. Overflow-indication
6. Memory-indication
7. Square Root
8. Divide
9. Rounding- / Floating point switch
10. Recall
11. Decimal switch
12. Add
13. Subtract
14. Ten-key
15. Clear
16. Clear Display
17. Clear memory
18. Subtract from
memory
19. Add to memory
20. Automatic memory mode
21. 14-digit display / Zero-mask

 

Other info:
calculation time for adding/subtracting:    0.01s
calculation time for dividing and multiplication:    0.25s
calculation time for square root:    0.5s
Weight:    6kg
New price (1972):    DM1.925 = ca. $950

 

Calculating examples ^

 

 

Label ^