Hewlett-Packard HP 21S (Pioneer MONTE CARLO)

The Hewlett-Packard HP 21S is a programmable calculator with 12 digits precision and algebraic logic. It has 170 functions, 37 keys, and an LCD (liquid crystal) display. The power source is 3x1.5V cell.

Facts at a glance:

Feature Value
Type: Programmable
Functions: 170
Keys: 37
Precision: 12
Logic: Algebraic
Display type: LCD
Length: 148mm
Width: 80mm
Thickness: 15mm
Weight: 120g
Power Source: 3x1.5V cell
Year introduced: 1989
YearDiscontinued: 1992

See other calculators by Hewlett-Packard