用c51编写写的x25045的读写程序，

超声波测剧驱动 40KHZ 频率 范围达到50CM 以上-Ultrasonic measurement-driven drama 40KHz frequency range to reach more than 50CM

汽车通讯控制程序，用红外线控制，发射接收程序均有，汽车状态包括左转，右转，刹车，前车左转，后车超车等-automotive communications control procedures, using infrared control, launch procedures have received, including the state of vehicle turn left, turn right, brake, the first car left, after overtaking other vehicles

F_Dtecter 单片机频率计 精确度1％以上 -Singlechip F_Dtecter Cymometer more than 1 accuracy

enc28j60的驱动， 通过ping命令来测试enc28j60是否连同 -enc28j60 drive through ping command to test whether or not together with enc28j60

很有参考价值的51单片机串口程序，正在搞串口的看一看-great reference value of 51 MCU procedures, is now pursuing a look at the serial port

本人收集的一些C语言程序，谢谢大家的光临 希望对你们有所帮助-I collected a number of C language programming, thank you all for coming hope to help you

usb 68013A芯片原理图和PCB图-usb 68013A chip and PCB schematic diagram

78E516ISP单片机程序下载程序-78E516ISP SCM procedures download

基于avr单片机的，spi接口的sd卡读写源程序-based avr MCU, 20 interface sd card reader source

显示驱动芯片HT1621的C51底层程序-display driver chip HT1621 the bottom procedures C51