Manufacturer: CANON
Model: L121
AKA: Canola L121
Year: 1970
Display: Nixie tubes (12)
Circuits: TEXAS INSTRUMENTS:
TMC1733, TMC1753,
TMC1754, TMC1755
Dimensions: 245x230x65 mm
Power type: 220V AC
Origin: Japan
S/N: 401709
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:  

N/A

Decimal point handling:  

Via switch on keyboard '0-1-2-3-4-6'-position.

Rounding:  

Via switch on keyboard.

Calculation overflow indication:  

 

Input overflow indication:  

 

Divide by Zero indication:  

 

Square root of negative value indication:  

 

Negative value indication:  

 

Constant function:  

 

Auto Power-off:  

 

Display details:  

 

Keyboard details:  

 

Printer:  

None

Extra features/remarks:  

Seems to be almost identical to the L120 model,
but has additional memory capacity.
Younger (1972?) models
(See: TAKAHARU) seems to have a different rotating switch (on the upper right of the keyboard) and a different non-ceramic chip set
(TEXAS INSTRUMENTS: TMC1807 instead of TEXAS INSTRUMENTS: TMC1755)

Initial price:  

 

Overall quality rate (1-10):  

 

OEM-copies:  

 

Other sources of info:  

BENSENE Rick, WOERNER Joerg

Advertisements/Publications:  

 



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Internals ^

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Display detail ^

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Display detail ^

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Keyboard detail (Magnetic switches) ^

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Magnetic switch detail ^

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Label (on the bottom) ^

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Label (on the front) ^