ALU

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ALU Abbrev. for arithmetic and logic unit. A portion of the central processor that generally forms functions of (usually) two input values and produces a single output result. These functions usually consist of the common arithmetic operations, the common logic operations, and shift operations. Associated with the ALU is a condition-code register that holds certain properties of the result of the most recent ALU operation (see also program status word).

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ALU Computing arithmetic and logic unit