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HP-22S
From Wikipedia, the free encyclopedia
Not to be confused with HP-22.
The HP-22S is an electronic calculator from the Hewlett-Packard company which is algebraic and scientific. This calculator is comparable to the HP-32S. A solver was included instead of programming. It had the same constraints as the 32S, lacking enough RAM for serious use. Functions available include TVM and unit conversions. Only single letter variable names are allowed. Marketed as a student calculator, the 22S uses infix notation rather than the reverse polish notation used on some higher-end HP calculators of the same era.
Quick Facts Type, Manufacturer ...
![]() HP-22S | |
Type | Scientific |
---|---|
Manufacturer | Hewlett-Packard |
Introduced | 1988 |
Calculator | |
Entry mode | Infix |
Display type | Character-based dot-matrix display |
Display size | 1 line, 12 characters |
CPU | |
Processor | HP Saturn (Sacajawea) |
Frequency | 640 kHz |
Programming | |
Firmware memory | 16 KB of ROM |
Other | |
Power supply | 3×1.5V button cell batteries (Panasonic LR44, Duracell PX76A/675A or Energizer 357/303) |
Dimensions | 148×80×15mm |
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