| Entry | RPN |
|---|---|
| Manufacturer | Hewlett-Packard |
| Introduced | 1978 |
| Discontinued | 1983 |
| Processor | Saturn[1] (Lewis) |
| Precision | 10 display digits exponent ±99 |
| Prog lang | RPN key stroke (fully merged) |
| Memory rom | ? KB of ROM |
| Ports | no |
| Supply | 2×1.5V AA cell batteries or power supply |
| Weight | 6 oz (170 g) to 8 oz (230 g) |
| Dimensions | 141×75×29mm |
The HP-30 or Spice series are RPN scientific hand-held calculators introduced by Hewlett-Packard in 1978. Some models are programmable.
Overview
Perhaps the HP-30 series, Spice, was to be released as a replacement for the aging HP-20 series.[2][3] It has no expandability. The display provided better readability by increasing the digit size and adding commas.
The entry-level models were the HP-31E and 32E, which were not programmable, but even the 31E provided a self-check function.[4]
The HP-37E and 38E/C were the financial models of the Spice series.
The battery of these calculators can be changed without using tools. The housing is closed by screws.[5]
Programming
The HP-33E/C (49 steps plus subroutines),[6] HP-34C (70 steps)[7] and 38E/C (99 steps)[3] are programmable. The C-suffixed models have a continuous memory.
The production of the 31E ended in 1980,[8] production of the other Spice models ended in 1983.[7] This calculator is well regarded in terms of quality, key stroke feel and daily usability for engineers.
Simulators and emulators
- HP Calculator emulators for Linux
Features
- All basic scientific functions
- Statistics (HP-32E,[9] HP-37E,[10] HP-38E/C[3])
- Numerical integration (HP-34C)
- Programmability (keystroke programming with branching, loops, tests and flags)
See also
References
- ^ "HP CPU and Programming". Museum of HP Calculators. Retrieved 27 February 2022.
- ^ "30 Series Technology and Packaging". www.hpmuseum.org. Retrieved 27 February 2022.
- ^ "HP-38C Features". Museum of HP Calculators. Retrieved 27 February 2022.
- ^ "HP-31E". Museum of HP Calculators. Retrieved 27 February 2022.
- ^ "HP-Models". thimet.de. Retrieved 27 February 2022.
- ^ "HP-33E/C". Museum of HP Calculators. Retrieved 27 February 2022.
- ^ "HP-34C". Retrieved 27 February 2022.
- ^ "HP-31E"
- ^ "HP-32E". Museum of HP Calculators. Retrieved 27 February 2022.
- ^ "HP-37E Features". Museum of HP Calculators. Retrieved 27 February 2022.