单词	arithmetic logic unit
释义	arithmetic logic unit noun variants or less commonly arithmetic and 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 Word History First Known Use 1972, in the meaning defined above
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