Calculator

A calculator is a device for performing numerical calculations. The type is considered distinct from both a calculating machine and a computer in that the calculator is a special-purpose device that may not qualify as a Turing machine. Although modern calculators often incorporate a general purpose computer, the device as a whole is designed for ease of use to perform specific operations, rather than for flexibility.

See also

General interest:

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• :Category:Calculators
• History of computing hardware

Mechanical calculators:

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• Abacus
• Napier's bones
• Comptometer
• Mercedes (calculator)
• Adding machine
• Addiator
• Curta

Electronic calculators:

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• List of calculators