Manufacturer: CASIO
Model: 121A
AKA: 121-A
Year: 1969
Display: Nixie (12)
Circuits:  
Dimensions: 330x130x100 mm
Power type: 220V
Origin: Japan
S/N:  
Owner: BRYSON Rhett

 

Feature  

Description 

Case:  

Plastic

Color case:  

Black

Color keyboard:  

Wood-color

Weight:  

 

Voltage selection:  

 

Adapter:  

 

Power consumption:  

 

Working condition:  

 

Printed Circuit Boards (PCB's):  

2 + 1 (Power supply) + 1 (Keyboard)

Memories:  

 

Memories indication:  

 

Prog. steps:  

N/A

Decimal point handling:  

 

Rounding:  

 

Calculation overflow indication:  

 

Input overflow indication:  

 

Divide by Zero indication:  

 

Square root of negative value indication:  

N/A

Negative value indication:  

 

Constant function:  

 

Auto Power-off:  

No 

Display details:  

 

Printer:  

N/A

Extra features/remarks:  

This model seems to be identical to the CASIO: ASA,
why CASIO did produce the same calculator with another name, is not very clear.

Initial price:  

 

Overall quality rate (1-10):  

8

OEM-copies:  

COMMODORE: 512

Other sources of info:  

The Old Calculator Museum

Advertisements/Publications:  

 

 

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