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Hewlett-Packard HP 22S Pioneer PLATO

The Hewlett-Packard HP 22S Pioneer PLATO is a scientific calculator with 12 digits precision and formula input logic. It has 200 functions, 37 keys and an LCD (liquid crystal) display. The power source is 3x1.5V cell.

Facts at a glance:

Type Scientific
Functions 200
Keys 37
Precision 12
Logic Formula
Display type LCD
Display size
Length 148 mm
Width 80 mm
Thickness 15 mm
Weight 120 g
Power Source 3x1.5V cell
Original price unknown
Est. current value unknown
Year introduced 1988
Year discontinued 1990

See other calculators manufactured by Hewlett-Packard.