51mcu开发板原理图，天祥电子

单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲-smallest SCM system, two LED digital serial output from the pipe then two 164-driven, Lout, Rout for about channel output, SET, ALT0, ALT1 to three keys, but also his own in the beginning I/O definition you want to change the I/O port; If using crystal 12M 89C51 can carry only about 14 songs, can be loaded with 89C52 Near 40

51单片机基础训练项目之会唱歌的单片机。本例使用普通有源蜂鸣器，通过控制单片机输出频率来达到“唱歌”的目的。着重训练初学者对IO管脚的认识。-51 MCU-based training program in the microcontroller will be singing. In this case the use of ordinary active buzzer, by controlling the microcontroller output frequency to achieve the " singing" objective. Focus on training for beginners to the IO pin awareness.

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

液晶显示模块手册中文详细说明，解决英文难懂的问题

基于51单片机动态显示数码管,及中断说明等-51 MCU-based dynamic display of digital control

一个简单的计算器是如何写的，单片机可以做很多智能东西，学习着可以发挥自己的想想，自己动手做一做。-A simple calculator is how to write, single-chip microcomputer can be a lot of smart things to do, learning to play with their own think about to do one to do it yourself.

基于2274液晶显示测试驱动，触摸屏教验程序-LCD drive for msp430 2274,cliber

液晶显示的程序，c语言编写！转摘！-LCD procedures, c language! Journals!

完全实用化的020 SMBUS程序（与时钟PCF8563通信-Entirely of 020 SMBUS utility program (with the clock PCF8563 communication

一个对4X4数字键盘进行行&列扫描,获取扫描码的程序,支持符合键,串键,软件去抖.-one pair of 4x4 digital keyboard ranks scanning, access code scanning procedures, with key support and collaborate keys, software to tremble.