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:  

1800 Bytes

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:  

This seems to be the top model of the 4000-series, 
which were introduced around 1972
In 1974 this 4900-model was added to the range.
These calcs do have an internal magnetic card reader for reading en writing 
The printer can print Alpha-numerical characters horizontal and vertical
with a speed between 90 and 200 chars/min (30-chars lines).

Initial price:  

Overall quality rate (1-10):  

8

OEM-copies:  

Other sources of info:  

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