(Unknown brand) DUAL POWER

Description

Brand: Unknown
Model: DUAL POWER
Type: Calculator
Picture: Unknown DUAL POWER
Batteries: Solar cell
Lifetime: Introduced: unknown
Terminated: unknown
Notes: Strange, this calculator is almost identical to the CASIO DUAL LEAF SL-200 but not entirely. The solar cell is different and what’s more this calculator does not have the negative square roots bug the CASIO DUAL LEAF SL-200 has.

Also strange is the fact that this calculator mentions DUAL POWER but I haven’t been able to find a battery anywhere. If it has one it’s well hidden.

Other than that, this calculator folds up to a small package that easily fits any pocket. This has the advantage of getting bigger keys and a better display into a small calculator.

This calculator has basic functions, a change-sign key, percentages and square roots.


©2024 Ernst Mulder