串行DA，MAX549PDF及汇编原程序，测试成功。51控制。

Interface PS/2 key board-Interface PS/2 key board

这个程序利用89S51演奏生日快乐的歌曲 */-This procedure performed using 89S51 Happy Birthday song* /

AVR单片机，mega16开发板，一些小程序，裸捐了。-AVR single-chip, mega16 development board, a number of small procedures, nude donated.

51单片机读写SD列子程序 可以学习51单片机如何读写SD卡-51 Singlechip Liezi SD procedures to read and write can learn how to read and write 51 Singlechip SD Card

freescale MCF5485EVB开发板上中断操作示例，利用一个timer产生中断，另外3个timer作为GPIO，使3g个LED每隔1秒钟轮换亮一次。-freescale MCF5485EVB interrupt the operational example of the development board, using a timer generate an interrupt, another three timer as a GPIO, so 3g a LED light at one-second rotation time.

插在usb上使用的声卡的原理图,器件少,简单实用

一个很不错的按键单片机C程序-a very good button SCM C Program

基于LCP21xx的频率测量程序，通过LCD1602显示，附带Proteus仿真电路图，是学习ARM和1602的好东西-LCP21xx based on the frequency of measurement procedures, through the LCD1602 display, incidental Proteus simulation schematics, ARM and 1602 to learn the good things

51单片机与MAX 7219连接，可一次性驱动8位数码管，绝对正确-MAX 7219 with 51 single-chip connections can be a one-time 8-bit digital tube-driven, absolutely right

该程序基于凌阳单片机做的无线温度遥测系统，并在液晶屏上进行显示-Sunplus based on the program to do single-chip wireless telemetry system temperature, and liquid crystal display screen. . .