Coprocessor meaning

kō'prŏs'ĕs-ər
A microprocessor that performs specialized functions that the central processing unit cannot perform or cannot perform as well and as quickly.
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An auxiliary processing unit designated for a particular operation, as one for making mathematical computations.
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A microprocessor distinct from the central processing unit. A coprocessor performs specialized functions that the central processing unit cannot perform or cannot perform as well and as quickly.
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A secondary processor in a computer that is used to speed up operations by taking some of the workload that the main CPU would otherwise have to handle. See GPU, GPGPU and math coprocessor.
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(computer hardware) An additional microprocessor used to supplement the functionality of the central processing unit, performing tasks such as floating-point arithmetic (floating-point unit) or graphics calculations (graphics processing unit).
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Origin of coprocessor