计算机中，解释并执行指令的一种功能单元。注：处理器至少包含有一个指令控制器和一个算术与逻辑运算器。

In a computer, a functional unit that interprets and executes instructions. Note: a processor consists of at least an instruction control unit and an arithmetic and logic unit.

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中央处理器，计算机或数字电路中含有运算，逻辑，控制和内部存储电路的部分。

CENTRAL PROCESSING UNIT, in a computer or digital circuit, the section containing the arithmetic and logic, control, and internal memory circuits.

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算术逻辑运算器：执行运算功能的中央处理器内的线路。

ALU: arithmetic Logic Unit; the circuitry within the CPU which performs all arithmetic functions.

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