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APF RS-1 (Kel-Co)

The APF RS-1 is an arithmetic calculator with algebraic logic. It has 16 functions, 29 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is PP3 9V. Note: APF RS-1; Cannelle RS1

Facts at a glance:

FeatureValue
TypeArithmetic
Functions16
Keys29
LogicAlgebraic
Display typeLED
Length140mm
Width70mm
Power SourcePP3 9V
Year introduced1979

Replacements:

If you have an APF RS-1 that is no longer working, you can first try replacing the PP3 9V battery. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by APF