HP-37E
| Industry | Electronics, Computer hardware |
|---|---|
| Founded | January 1, 1939 |
| Founder | Bill Hewlett, Dave Packard |
| Products | Calculators, Computers, Printers, Software |
| Website | www |
The HP-30 or Spice series represents a line of scientific handheld calculators utilizing RPN, launched by Hewlett-Packard in 1978. Certain models within this range offer programmability.
Overview
Also known as Spice, the HP-30 series was probably designed as a successor to the older HP-20 series. It introduced enhanced display clarity through larger digits and the inclusion of comma separators, although it did not provide options for expansion.
The entry-level variants comprised the non-programmable HP-31E and HP-32E; notably, the HP-31E incorporated a self-test feature. Financial professionals were targeted by the HP-37E and HP-38E/C models.
Battery replacement is straightforward and can be performed by users without tools, with battery compartments secured by screws.
Programming
Models capable of programming include the HP-33E/C, which supports 49 steps plus subroutines; the HP-34C, allowing 70 steps; and the HP-38E/C with 99 steps. Versions marked with "C" are equipped with non-volatile memory.
Manufacture of the HP-31E ceased in 1980, while production of other Spice series calculators concluded by 1983. These devices are recognized for their robust construction, dependable key action, and suitability for daily use by engineers.
Simulators and emulators
- HP Calculator emulators compatible with Linux systems
Features
- Fundamental scientific calculations
- Statistical functions (available on HP-32E, HP-37E, HP-38E/C)
- Numerical integration capability (HP-34C)
- Keystroke programming that supports branching, looping, conditional tests, and flags