arithmetic logic unit

noun
variants: or less commonly arithmetic and logic unit

Definition of arithmetic logic unit 

computing

: a circuit in a computer's central processing unit that performs basic mathematical calculations … the core of a central processing chip is the arithmetic logic unit or units. These units do basic operations like addition, multiplication and division.New York Times, 23 July 1998 abbreviation ALU

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First Known Use of arithmetic logic unit

1972, in the meaning defined above

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