Hewlett-Packard HP 19C (Sting CLYDE)

Hewlett-Packard HP 19C
Image: Wikimedia CC BY-SA 3.0
The Hewlett-Packard HP 19C is a programmable calculator with 12 digits precision and RPN (reverse polish notation) logic. It has 81 functions, 31 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4x1.2V NiCd battery pack. Note: HP29C with printer. Named "Continuous Memory". Only 16 from the 30 registers are saved within this "Continuous Memory".

Facts at a glance:

Feature Value
Type: Programmable
Functions: 81
Keys: 31
Precision: 12
Logic: RPN
Display type: LED
Printer: Yes
Length: 165mm
Width: 88mm
Thickness: 40mm
Weight: 350g
Power Source: 4x1.2V NiCd battery pack
Year introduced: 1977
YearDiscontinued: 1979

See other calculators by Hewlett-Packard