电子图书《华中理工大学出的C51教材》，很不错的。

５１单片机开发的键盘扫描程序　希望对大家有用-Development of 51 single-chip microcomputer keyboard scanner hope useful for everyone

单片机C程序100例,可供开发时参考,也可供初学者借鉴.-100 cases of single-chip C program for the development of reference, but also for the beginners learn.

msp430f2274的异步串口通信与lcd1602显示-msp430f2274 asynchronous serial communications and display lcd1602

单片机，与PC 串口通讯 程序-Microcontroller, and PC serial communication program

MSP430串口程序，串口接收与发送均用中断处理。当MSP430串口中断接收到PC机的指令后通过中断发送将数据发送出去。-MSP430 serial program, serial port receive and send all use interrupt handling. When the MSP430 serial receive interrupt instruction PC, adopted after the break to send the data sent.

用C51制作的红外通讯装置，有详细的源代码，可以直接使用-C51 produced by the infrared communication device, a detailed source code, can be directly used

一种能产生宽调节占空比的PWM芯片，适合做逆变电源。-Can generate a duty cycle of the PWM chip width adjustment, suitable for power inverters.

触摸屏的工作原理及典型应用，很好的参考资料！-Touchscreen the working principle and typical applications, a good reference!

keil c51 小模式下uc/os应用，版本keil uv2 6.12，很好用-decoder mode uc/os application, version 6.12 Keil uv2 good use

经过测试成功的PDIUSBD12与Mega8的连接代码，如有需要，可以下载，从PDISUBD12与S51单片机连接代码修改而来-PDIUSBD12 tested success Mega8 connection with the code, if necessary, can be downloaded from PDISUBD12 connection with the S51 code changes from single-chip microcomputer