在CPU中，（请作答此空） 的主要功能是在控制器的控制下完成各种算术运算和逻辑运算。（ ）为ALU提供一个工作区，用来暂存数据。（ ）存储下一条要执行指令的地址。
- A.运算器
- B.累加寄存器
- C.程序计数器
- D.地址寄存
正确答案及解析
正确答案
解析
运算器。运算器也称为算术逻辑单元（ArithmeticandLogicUnit，ALU），其主要功能是在控制器的控制下完成各种算术运算和逻辑运算。累加寄存器AC：通用寄存器，为ALU提供一个工作区，用在暂存数据；程序计数器PC：存储下一条要执行指令的地址地址寄存器AR：用来保存当前CPU所访问的内存单元的地址。
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