单片机C51实战应用集锦，是很好的单片机初学者学习和参考的资料。...

dds调试源代码，已经调试好的，可以直接使用，谢谢！-dds debug source code, debugging has been good, and can be used directly, thank you!

C51源程序和文档-C51 source code and documentation

keil C51 Byte事例-Byte stories

本系统主要用于旅游景点记录游客人数，并限制旅客的流量。采用红外传感器通过检测人体红外并对通过人数进行计数，通过红外对管将检测到的数据发送至单片机，单片机处理后送至数码管显示，数码管显示的数据即为通过的人数，并通过设定值限制旅客数量。当游客超量是系统将给出相应的提示，禁止游客再进入。以更好的保护旅游景点的生态环境。-This system is mainly used for tourist attractions recording the number of visitors and limit the flow of tourists. Use of infrared sensors by detecting the human body by infrared and number of people count on the tube will be detected by infrared the data sent to the MCU, MCU after treatment sent to the digital LED display, digital LED display of the data shall be the number of through and through setting limits the number of passengers. When the visitors over-the system will give the appropriate prompts to prohibit visitors from re-entering. To better protect the tourist attractions of the ecological environment.

51单片机实用子程序库-51 SCM practical subroutine library

基于uPSD3334单片机pwm波形产生程序，频率可调，占空比可调。可同时产生三路PWM波形。在电力电子中有极好的应用。使用Kerl开发环境-based uPSD3334 MCU pwm waveform generator procedures, adjustable frequency, duty cycle adjustable. May also have three PWM waveform. In power electronics has an excellent application. Kerl use development environment

IAR例子，里面是一个完整的串口异步通讯例子。-IAR examples, which is a complete example of serial asynchronous communication.

430学习书籍,好东西,希望大家下载-430 learning books, good things, I hope everyone downloads

C8051F020单片机的AD测试程序，很好的哦！直接移植便可啦！-C8051F020 MCU AD test procedure, Oh good! Transplant will be able to direct it!

C51单片机教程L1,以及L1的例子源代码.-C51 Singlechip Guide L1, and L1 example source code.