HP 30 series

The HP-30 or Spice series are RPN Scientific hand held calculators introduced by Hewlett-Packard in 1978. Some models are a programmable.

The HP-32E

HP-30 series
The HP-33C
TypeProgrammable scientific
ManufacturerHewlett-Packard
Introduced1978
Discontinued1983
Calculator
Entry modeRPN
Precision10 display digits exponent ±99
Display typeLED
Display size1 line
CPU
ProcessorSaturn[1] (Lewis)
Programming
Programming language(s)RPN key stroke (fully merged)
Firmware memory? KB of ROM
Interfaces
Portsno
Other
Power supply2×1.5V AA cell batteries or power supply
Weight6 oz (170 g) to 8 oz (230 g)
Dimensions141×75×29mm

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

Features

See also

References
  1. "HP CPU and Programming". Museum of HP Calculators. Retrieved 2022-02-27.
  2. "30 Series Technology and Packaging". www.hpmuseum.org. Retrieved 2022-02-27.
  3. "HP-38C Features". Museum of HP Calculators. Retrieved 2022-02-27.
  4. "HP-31E". Museum of HP Calculators. Retrieved 2022-02-27.
  5. "HP-Models". thimet.de. Retrieved 2022-02-27.
  6. "HP-33E/C". Museum of HP Calculators. Retrieved 2022-02-27.
  7. "HP-34C". Retrieved 2022-02-27.
  8. "HP-31E".
  9. "HP-32E". Museum of HP Calculators. Retrieved 2022-02-27.
  10. "HP-37E Features". Museum of HP Calculators. Retrieved 2022-02-27.
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