CASIO-MINI CM-602

Description

Brand: CASIO
Model: MINI CM-602
Type: Calculator
Picture: CASIO-MINI CM-602
Batteries: AA x 4
Lifetime: Introduced: 1974
Terminated: unknown
Notes: Early CASIO model, quite a nice horizontal design. It has an 6-digit fluorescent display.

There is a slider to determine whether this calculator is in currency mode or integer mode.

When set to "0" all operations are truncated to integers. This has some peculiar results. For instance 9 ÷ 5 = will get you the result "1".

The remainder of the result can be viewed by pressing the key and holding it, in this example that will show "8ooooo".

Things are more logical with the slider set to "2". Now the results are in 2-digit (financial) floating point and the above calculation will produce "1.80".

Its keys are very bouncy. This might be due to worn out capacitors but I have not taken it apart to check.

The display has a peculiarity, the zero is lower case! I don’t know any other calculator series that has a lower case zero.

The number 170.50 for example looks like this:  17o.5o

The calculator runs on batteries as well as on a power adapter.

There is an article about this calculator on the site of the National Museum of American History here (link validated 2025-11-15).

Peripherals

A power adapter.