这是我用C语言写的一个数字钟，他可以实现多种闹钟和秒表功能...

232同485转换的pcb图，有需要的只要稍加修改一下就可以了-232 with 485 conversion pcb diagram, there is a need for as long as a little tinkering can be a

此书为keilC的调试心得，有助于开发过程中错误的理解，积累开发经验！-Debugging keilC book for ideas and help to develop understanding of the process error, the accumulation of development experience!

《单片机语言C51程序设计》的部分配套源代码，适合于刚开始接触单片机编程的程序员- Single-chip C51 programming language part of supporting source code, suitable for beginning programmers contacts Microcontroller Programmer

基于51单片机的1602显示的计算器，没有附电路，如有需要请与shenchangwei945@163.com联系-Based on the 1602 show 51 single-chip calculator circuit is not attached, if necessary, please contact shenchangwei945@163.com

关于LCD12864液晶驱动的源程序，编译过，可直接使用。-On the LCD-driven LCD12864 source, compiler, and can be used directly.

这是单片机C语言位操作函数！给大家参考使用，可以直接在单片机中引用，不需要自己去编写，弥补了C语言位操作没有汇编灵活的缺点-This is the C language SCM- manipulation functions. For your reference use, can be directly invoked in SCM, you do not need to do to prepare. compensate for the C-language compilation flexible operation without the shortcomings

红外遥控信号自学习和还原的资料，值得研究学习。-Infrared remote control signals to restore the self-learning and information, is worth studying to learn.

freescale HC12_A64例程 -Freescale HC12_A64 routines

改进的胶印机印刷控制程序，效率提高5倍。-Offset printing improved control procedures, improve the efficiency of 5 times.

基于Profibus_DP现场总线的电能表设计-Profibus_DP fieldbus-based energy meter design