HP 30 series

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

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

The HP-32E

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. ^ a b c "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. ^ a b "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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