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微处理机 虽然微处理机有时看作是微型计算机的同义词,但一般说来,微型计算机是由CPU,ROM,RAM,I/O等基本部份组成,微处理机多指其中的CPU芯片。CPU(Central Procecsing Unit)即中央运算处理单元,是计算机系统的核心部份,它控制、管理存贮器、输入输出接口(I/O)等部份的动作并对数据进行算术和逻辑运算。微型计算机与大型计算机不同,CPU中不包括程序存贮器和数据存贮器。把程序存贮器,数据存贮器,I/O以及CPU做在不同芯片上的微型计算机称为多片机,把上述这些部份做在一个芯片上的称之为单片机,其关系示如图1。
Microprocessors Although microprocessors are sometimes seen as synonymous with microcomputers, microcomputers generally consist of basic components such as CPU, ROM, RAM, and I / O. Microprocessors are mostly CPU chips. Central Processing Unit (CPU) is the core part of the computer system. It controls and manages the memory, input / output interface (I / O) and other parts of the action and arithmetic and logic operations on the data. Microcomputers, unlike mainframe computers, do not include program memory and data memory. The program memory, data memory, I / O and CPU in different chips on the microcomputer called the multi-chip microcomputer, the above part of these on a chip called microcontroller, the relationship between such as figure 1.