CPU的英文全称是Central Processing Unit，翻译成中文也就是中央处理器。cpu有着处理指令、执行操作、控制时间、处理数据四大作用，打个比喻来说，cpu就像我们的大脑，ABB PCD235帮我们完成各种各样的生理活动。因此如果没有cpu，那么电脑就是一堆废物，无法工作。
CPU从存储器或高速缓冲存储器中取出指令，放入指令寄存器，并对指令译码。它把指令分解成一系列的微操作，然后发出各种控制命令，执行微操作系列，从而完成一条指令的执行。ABB PCD235指令是计算机规定执行操作的类型和操作数的基本命令。ABB PCD235指令是由一个字节或者多个字节组成，其中包括操作码字段、一个或多个有关操作数地址的字段以及一些表征机器状态的状态字以及特征码。有的指令中也直接包含操作数本身。
The full English name of CPU is Central Processing Unit, which translates into Chinese, that is, central processing unit. Cpu has four functions: processing instructions, executing operations, controlling time and processing data. Metaphorically speaking, cpu is like our brain, and ABB PCD235 helps us to complete various physiological activities. Therefore, if there is no cpu, then the computer is a pile of waste and can’t work.
CPU takes out the instruction from the memory or cache, puts it into the instruction register, and decodes the instruction. It decomposes the instruction into a series of micro-operations, and then issues various control commands to execute the micro-operation series, thus completing the execution of an instruction. Pcd235 instruction is the basic command of computer to specify the type and operand of operation. Pcd235 instruction is composed of one byte or more bytes, including operation code field, one or more fields related to operand address, some status words and feature codes that represent machine status. Some instructions also directly contain operands themselves.
