4 keyboard test procedure four keyboard test procedures

单片机视频教程，大学本科计算机专业必修，主要介绍单片机原理，接口，结构-SCM video guide, a college computer professional compulsory, introduced SCM principles and interface structure

瑞士盛世瑞恩数字温湿度传感器SHT11的完整程序 开发环境为KEIL-Switzerland Sensirion digital temperature and humidity sensor SHT11 a complete program development environment for the KEIL

可调万年历led版:led数码显示时间及温度，时间随时可调。-Adjustable calendar led Edition: led digital display time and temperature, time adjustable at any time.

采用AYG-59C GSM MODEM模块，和at89s52的串行口通信。通过at指令控制GSM模块，同时用单片机处理GSM发给单片机串口的反馈信息，实现远程无线控制。-Used AYG-59C GSM MODEM modules, and AT89S52 serial port communications. GSM through at command control module, at the same time deal with single-chip GSM distributed feedback single-chip serial port, wireless remote control.

16*16点阵，可能显示汉字，同时可以放出音乐-16*16

C51单片机电表程序下载测试程序,用于电表的内部程序下载-C51 microcontroller meter download test procedures for the internal procedures meter Download

介绍了用RS-232串口进行开发的过程，对于刚涉及串口编程的开发人员有一定帮助-Introduction by RS-232 serial port to carry out development process, for serial programming just related to the development of staff has a certain extent, help

12864显示程序（EE21学习板演示程序） -12864 display program (EE21 learning demo board)

超声波检测C代码源程序，单片机嵌入式软件程序设计-Ultrasonic testing C code source, single-chip embedded software programming

查找字符串中含有7e的代码用于传感器节点的解包-Find a string containing the code for 7e sensor nodes unpack