The HP-30 or Spice series are RPN Scientific hand held calculators introduced by Hewlett-Packard in 1978. Some models are a 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 was the HP-31E and 32E, that were not programmable; but even the 31E provided a Self-check.[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] and HP-34C (70 steps)[7] and 38E/C (99 steps)[3] are programmable, the C-models have a permanent memory.
The production of the 31E ended in 1980,[8] production of the other Spice models ended in 1983.[7] As this calculator is regarded amongst the very good 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 2022-02-27.
- ^ "30 Series Technology and Packaging". www.hpmuseum.org. Retrieved 2022-02-27.
- ^ a b c "HP-38C Features". Museum of HP Calculators. Retrieved 2022-02-27.
- ^ "HP-31E". Museum of HP Calculators. Retrieved 2022-02-27.
- ^ "HP-Models". thimet.de. Retrieved 2022-02-27.
- ^ "HP-33E/C". Museum of HP Calculators. Retrieved 2022-02-27.
- ^ a b "HP-34C". Retrieved 2022-02-27.
- ^ "HP-31E".
- ^ "HP-32E". Museum of HP Calculators. Retrieved 2022-02-27.
- ^ "HP-37E Features". Museum of HP Calculators. Retrieved 2022-02-27.
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