HP-32E
| Industry | Calculator manufacturing |
|---|---|
| Founded | 1978 |
| Founder | Hewlett-Packard |
| Products | Scientific calculators |
The HP-30 series, also referred to as the Spice series, comprises RPN (Reverse Polish Notation) scientific calculators produced by Hewlett-Packard starting in 1978. Certain variants within this lineup support programmability.
Overview
Designed as a successor to the earlier HP-20 series, the HP-30 or Spice calculators offer enhanced display clarity through larger digits and the inclusion of commas, although they lack options for expansion.
The entry-level range consists of the non-programmable HP-31E and HP-32E models; notably, the HP-31E includes a self-test feature. Financial professionals were targeted with the HP-37E and HP-38E/C variants.
These devices feature user-replaceable batteries that do not require tools for access, and their casings are fastened using screws.
Programming
Programmable units in the series include the HP-33E/C, which supports 49 program steps plus subroutines; the HP-34C with 70 steps; and the HP-38E/C offering up to 99 steps. Models designated with a "C" provide non-volatile memory retention.
Manufacture of the HP-31E ceased in 1980, while other Spice models were phased out by 1983. Renowned for their robust build quality, responsive keys, and dependable operation, these calculators have been particularly popular among engineers.
Simulators and emulators
- HP Calculator emulators compatible with Linux systems
Features
- Fundamental scientific calculations
- Statistical functions available on HP-32E, HP-37E, and HP-38E/C
- Numerical integration capability found in the HP-34C
- Programmability via keystroke programming that allows branching, looping, conditional tests, and flag usage