本程序使用P89V51单片机利用起PCA功能对脉冲宽度可调，实现两路输出，加LED显示和按键功能，详细请看程序注释，编程风格自认可以...

用51单片机的PWM实现DA -PWM using 51 single chip realize DA

利用8051单片机驱动蜂鸣器，实现音乐发声功能。-8051 drivers to use buzzers realize music vocal function.

此程序是用于单片机e2rom读写的程序。-The firmware of the USBisp is easy to upgrade. A software upgrade works also via the USB interface. The package contains a STK500 compatible bootloader so you can use avrdude to update the firmware. There are 7k of flash left in the ATMega8

单片机为控制器件的，一个小巧的频率测试器。用c语言编写，用过验证和实际实践。-microcontroller for the control device, a compact frequency device. C language with the preparation, certification and used actual practice.

串口测试程序，当收到一个数据时会返回一个同样的数据-Serial test procedure, when a data received will be a return of the same data

51单片机读写D1302 包含对时钟区以及RAM区两部分的读写例程，下载直接使用绝无BUG-D1302 single-chip microcomputer 51 to read and write clock zone contains two parts as well as the RAM area of the read and write routines, download direct use no BUG

LPC2103，ADC源码，很好用的，IAR环境下编译-LPC2103, ADC source, well used, IAR compiler environment

STC单片机的在线下载功能的ISP原代码-STC MCU ISP online download function of the original code

本程序有一定的参考价值，内含电路图及程序，有利于单片机开发-This procedure has certain reference value, including circuit diagrams and procedures, in favor of single-chip development

这是51单片机应用在LCD上的源代码。可以学习的哦-SCM application of the LCD source code. Oh, can learn the