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.
运算器：运算器是数据加工处理部件，它是由算术逻辑单元(alu)、累加器、数据缓冲器等组成。
Arithmetic unit: arithmetic unit is a data processing unit that consists of arithmetic logic unit (ALU), accumulator, data buffer, ect.
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