C51 用PCA 模拟串口，很有参考价值得源码

以GMS97C2051单片机为核心，采用TLC2543 12位串行A/D转换器，设计了一个串行数据采集/传输模块，给出了主要源程序。-to GMS97C2051 as the core, using TLC2543 12 serial A/D converter, the design of a serial data collection/transmission module, is the main source.

周立功的关于LPC214X硬件触发转换程序.

非常方便使用的ds1302程序。使用时，只需调用5个函数，即可完成1302的初始化，读写等-Ds1302 is very easy to use program. Use, simply call the 5 function, 1302 to complete the initialization, reading and writing, etc.

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ARM程序，2*2键盘功能，程序可扩展成3*3或4*4的键盘，在LPC2103上测试成功。-ARM procedures, 2* 2 keyboard functions, procedures can be extended into a 3* 3 or 4* 4 keyboard, to test the success of the LPC2103.

一个使用C51编写的视频切换器的控制程序，用于16选4的视频切换-use C51 to prepare a video switcher control procedures for the April 16 elections Video Switch

用89S52进行DS1820温度读取程序-89S52 used for DS1820 temperature reader

单片机实验，实现双字节无符号数的加法，利用查表指令，在此基础上可以学习查表指令的用法-SCM experiment, to achieve double-byte unsigned number of addition, using look-up table instructions, on this basis, can learn the usage of table look-up instruction

51单片机实用子程序库，含有详尽的单片机资源调用子程序-51 single-chip utility subroutine library, which contains detailed subroutine calls single-chip resources

单片机与PC机串口程序，pc机用串口调试工具发送16进制数据到单片机，单片机再返回一个接受到的信号回pc机，-SCM and PC serial port procedures, PCs with serial debugging tools to send 16-band data to a single chip, the microcontroller return to a finer signal to PCs,