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Contents

   



(Top)
 


1 Overview  



1.1  Programming  







2 Simulators and emulators  





3 Features  





4 See also  





5 References  





6 External links  














HP 30 series






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From Wikipedia, the free encyclopedia
 

(Redirected from HP-31E)

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?KBofROM
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 a programmable.

The HP-32E

Overview[edit]

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[edit]

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[edit]

Features[edit]

See also[edit]

References[edit]

  1. ^ "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.
  • External links[edit]


    Retrieved from "https://en.wikipedia.org/w/index.php?title=HP_30_series&oldid=1165087110"

    Categories: 
    HP calculators
    HP programmable calculators
    Computer-related introductions in 1978
    Hidden category: 
    Use dmy dates from May 2023
     



    This page was last edited on 12 July 2023, at 22:34 (UTC).

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