能实现多功能。既可做倒计时秒表,又可进行定时，还可以通过扩展完成其他功能，而且功能的相互转换也十分简单...

程序包括的内容是常用的AD0809演示程序，读者可以很容易将此代码移植到自己的系统上。-Procedures, including the contents of the AD0809 is a commonly used presentation program, readers can easily transfer this code to your system.

陵阳61单片机的计数测速程序， 按照双叶螺旋桨遮光计算，外部中断触发，SPI-led显示，定时器控制0.5秒更新，基于unSp IDE 2.0-61 Singlechip陵阳count velocimetry procedures, in accordance with the propeller futaba shading, the external interrupt trigger, SPI-led shows that 0.5 seconds timer control to update, based on the unSp IDE 2.0

51单片机的电子琴C程序有自动演奏和键盘演奏功能-51 Microcontroller, the flower C program for automatic playing and keyboard performance features

adc ， ad7705 模拟spi总线的keil c51 程序，经过调试通过。-adc, ad7705 analog spi bus keil c51 procedures, after debugging through.

用485实现单片机之间的串行通信。 从机部分一直等待主机的命令，接收到就发响应信号，然后接受数据，接受成功就用液晶显示-MCU with 485 Serial Communication between. From the plane of the mainframe have been waiting for the orders received on the response signal and then receive data on the successful use of acceptable LCD

此程序为cstn_lcd液晶驱动，目前市面上的许多彩屏手机都是CSTN-This procedure for cstn_lcd LCD driver, the current market, many are CSTN color screen mobile phone

pic单片机工程，包括电压采样，CAN总线通信等功能。-pic microcontroller projects, including voltage sampling, CAN bus communication, and other functions.

着是基于51的电子密码锁，希望大家支持！！！！谢谢，以后多多交流-51 on the basis of the electronic code lock, I hope you will support! ! ! ! Thank you, after a lot of exchanges

这是我校用于课程设计的USB单片机的库函数。内容精彩，不可多得。-This is my school curriculum design for the USB MCU library functions. As exciting indeed.

NXP的mifare ultralight　数据手册, 英文版本,完成对电子标签的操作.-NXP" s data mifare ultralight manual, English version, the completion of the operation of electronic tags.