Calculator

$Scientific calculator displays of fractions and decimal equivalents.$

An office calculating machine with a paper printer.

An electronic calculator is a small, portable electronic device used to perform both basic operations of arithmetic and complex mathematical operations.

The first solid state electronic calculator was created in the 1960s, building on the extensive history of tools such as the abacus (developed around 2000 BC), and the mechanical calculator (developed in the 17th century AD). It was developed in parallel with the analog computers of the day.

单词	Minus key
释义	Minus key 英语百科 Calculator $Scientific calculator displays of fractions and decimal equivalents.$ An electronic calculator is a small, portable electronic device used to perform both basic operations of arithmetic and complex mathematical operations. The first solid state electronic calculator was created in the 1960s, building on the extensive history of tools such as the abacus (developed around 2000 BC), and the mechanical calculator (developed in the 17th century AD). It was developed in parallel with the analog computers of the day.
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Minus key

Calculator