Simple Calculator and Minimal

This article is about the electronic device. For mechanical precursors to the modern calculator, see mechanical calculator. For other uses, see Calculator (disambiguation).

An electronic pocket calculator with a liquid-crystal display (LCD) seven-segment display that can perform arithmetic operations

A modern scientific calculator with a dot matrix LCD
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.

The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom. They later became used commonly within the petroleum industry (oil and gas).

Modern electronic calculators vary from cheap, give-away, credit-card-sized models to sturdy desktop models with built-in printers. They became popular in the mid-1970s as the incorporation of integrated circuits reduced their size and cost. By the end of that decade, prices had dropped to the point where a basic calculator was affordable to most and they became common in schools.
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