说明：  是一本有关单片机应用与实践的实验操作书，是单片机爱好者入门的操作的好例子，并包含源程序和相应的电路图 主要内容： 1.实验电路板介绍，功能及特点 2. MCS-51单片机及其开发系统（仿真器）的认识， MCS-51 I/O引脚输入/输出，外中断实验，LED显示与定时中断，I/O口扩展与定时器T2中断，I/O扩展与键盘接口电路，并行通信及MCS-51与并行打印机接口，点对点串行通信，I2C总线，PCF8536使用，无线解码，LCD的使用，SPI的通信，ISD4000系列语音芯片的使用
(Is a microcomputer application and practice of the experimental operation of the book, is a single chip lovers a good example of the operation started, and includes source code and the corresponding circuit main elements: 1. Experimental circuit board description, features and characteristics 2. MCS-51 SCM and development system (simulator) knowledge, MCS-51 I/O pin input/output, and interrupt test, LED display and timer interrupt, I/O port expansion and Timer T2 interrupt, I/O expansion and keyboard interface circuit, parallel communication, and MCS-51 and parallel printer interface, point to point serial communication, I2C bus, PCF8536 use, wireless decoding, LCD use, SPI communication, ISD4000 series voice chips use)