在介绍微机国内外进展情况之前,想谈一谈人们常常分不太清楚的几个概念。即微处理机、微计算机和微计算机系统的概念。 微处理机是最基本的系统。微计算机是在微处理机的基础上加上存储器、输入/输出电路和系统总线接口,而微处理机系统则是在微计算机的基础上包括外围设备和系统软件,用 Before introducing the progress of domestic and foreign computers, I would like to talk about several concepts that people often do not clearly understand. That is, the concept of microprocessors, microcomputers, and microcomputer systems. The microprocessor is the most basic system. Microcomputers are based on microprocessors plus memory, input/output circuits, and system bus interfaces. Microprocessor systems include peripherals and system software on the basis of microcomputers.