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The first Soviet programmable stationary calculator the ISKRA 123, using mains power, was released at the beginning of the 1970s. The first programmable battery-powered pocket calculator Elektronika B3-21 was developed by the end of 1977 and released at the beginning of 1978. Its successor, B3-34, wasn't backward compatible with B3-21.
The IBM 632 was a valve-and-relay driven basic (very basic) accounting machine, introduced in 1958, [1] that was available in seven different models. It consisted of an IBM Electric typewriter and at least a punched card unit (like the IBM 024 ) that housed the "electronics" in two gates (a relay gate and an electronic gate).
HP-19B, introduced on 4 January 1988, along with the HP-17B, HP-27S and the HP-28S, and replaced by the HP-19BII (F1639A) in January 1990, [2] was a simplified Hewlett Packard business model calculator, like the 17B.
HP-41C, HP-41CV and HP-41CX on MyCalcDB (bilingual) (database about 1970s and 1980s pocket calculators) Page of an HP-41CX user with photos, documents for download, printer, card reader... C++ (linux, QT) Source-code project. Simulator HP41CX in a nearly natural look. Based on nsim-0.61 NUT Core by Eric Smith.
The machine code and functionality of the MK-52 and MK-61 calculators were extensions of the earlier MK-54, [2] B3-34, and B3-21 Elektronika calculators. The MK-52 is the only calculator known to have internal storage in the form of an EEPROM module. As with many Soviet calculators, the MK-52 has a number of undocumented functions. [4]
A HP-21. The HP-21 was a scientific calculator produced by Hewlett-Packard between 1975 and 1978. [1] It was designed as a replacement for the HP-35, and was one of a set of three calculators, the others being the HP-22 and HP-25, which were similarly built but aimed at different markets.
Also available for the TI-59 and TI-58 was a thermal printer (the PC-100A, B, and C models); the calculator was mounted on top of the printer and locked in place with a key. The calculator can be programmed to request input from the user, and output results of calculations to the printer.
Casio fx-77, a solar-powered digital calculator from the 1980s using a single-line LCD. A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic (addition, subtraction, multiplication, division) and advanced (trigonometric, hyperbolic, etc.) mathematical operations and functions.