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.

CASIO CM-602 Display The display has a peculiarity, the zero is lower case! I don’t know any other calculator series apart from the early CASIO’s that have a lower case zero. Shown here is how the number "402.00" is displayed on this calculator.

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 2025-12-06).

Peripherals

A power adapter.