Hewlett-Packard HP 97S (Topcat RICOCHET)

The Hewlett-Packard HP 97S is a programmable calculator with 12 digits precision and RPN (reverse polish notation) logic. It has 108 functions, 71 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4x1.2V NiCd battery pack. Note: HP97 with a BCD link in TTL on a 50 pins connector.

Facts at a glance:

Feature Value
Type: Programmable
Functions: 108
Keys: 71
Precision: 12
Logic: RPN
Display type: LED
Printer: Yes
Length: 202mm
Width: 228mm
Thickness: 64mm
Weight: 1134g
Power Source: 4x1.2V NiCd battery pack
Year introduced: 1977
YearDiscontinued: 1982

See other calculators by Hewlett-Packard