第二讲微处理器中央处理器通称CPU,是数字计算机中运算器、寄存器和控制器的总称,是组成计算机系统的重要部分。如果用大规模集成电路工艺将其制成一块器件,则称它为微处理器MPU。它是微计算机系统中产生控制信号、完成各种运算功能、执行微处理器与存贮器及各种外部设备之间的信息交换功能等。规定微计算机进行什么类型操作(如加法、减法、移位操作等)、操作数或操作数地址的一组字符叫做指令。在计算里指令的 Second, the microprocessor CPU, commonly known as CPU, is a general term for computing units, registers and controllers in digital computers. It is an important part of a computer system. If it is made as a piece of equipment in a large scale integrated circuit process, it is called a microprocessor MPU. It is a micro-computer system to generate control signals to complete a variety of computing functions, the implementation of microprocessors and memory and a variety of external devices such as information exchange between functions. What kind of operation (such as addition, subtraction, shift operation, etc.) that the microcomputer carries out, the operand or the operand address a group of characters is called the instruction. In the calculation instructions