51单片机写得MODBUS协议程序，可以实现寄存器得读写等操作

用于储存大量数据，它有一个定时器，到一定数量，它会自动报警。-used to store large amounts of data, it has a timer, to a certain number, it will automatically alarm.

用51单片机实现简单的音乐播放生日快乐歌。-51 MCU with a simple music player, a happy birthday song.

使用Keil for arm编译环境的LPC21xx的watchdog（看门狗）的工程示例程序，对使用LPC21XX的单片机开发人员有参考价值。-use Keil compiler for arm of the environmental watchdog LPC21xx (gates dog) project examples procedures, the use of SCM LPC21XX Developer reference value.

用upd6464 给TV信号 加叠加字符 -add osd for TV signal with upd6464

用AVR单片机实现对时钟芯片DS1302的spi驱动，来读取和写入时间-AVR Microcontroller with the right of the spi clock chip DS1302 drive to read and write times

超声波测距，C语言，AT89S52,keil3通过-Ultrasonic Ranging

51单片机扩展usb方安 51单片机扩展usb方安-51 Single-chip Single-chip expansion usb Mrs 51 Mrs usb expansion

ST7920驱动程序，便于相应驱动的液晶的显式操作-ST7920 driver for the LCD driver corresponding explicit operation

这是从网上找来的一个比较典型的PID处理程序，在使用单片机作为控制cpu时，请稍作简化。-It is found from the Internet a more typical PID treatment procedures, the use of single-chip microcomputer as the control cpu, please make some simplification.

基于凌阳系列单片机的以太网驱动程序，已在SPCE61上调试通过-Sunplus series based on single-chip Ethernet driver has been SPCE61 debugging through