Modern electronic calculators vary from cheap, give-away, credit-card-sized models to sturdy desktop models with built-in printers. They later became used commonly within the petroleum industry (oil and gas). 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. The first solid-state electronic calculator was created in the early 1960s. A modern scientific calculator with a dot matrix LCDĪn electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
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