跑马灯程序，24个口全用

功能描述： 利用AT89S51单片机的T0、T1的定时计数器功能，来完成对输入的信号进行 频率计数，计数的频率结果通过8位动态数码管显示出来。要求能够对2－40KHZ 的信号频率进行准确计数，计数误差不超过2/1-Functional Description: Using AT89S51 MCU T0, T1 timing counter function, to complete the input signal frequency counting, counting the frequency of 8 resulted in the adoption of dynamic digital tube display. Request to the 2-40KHZ signal frequency accurately count, counting error of less than 2/1

atmega8单片机开发的MP3播放器,效果和音质都很不错,包括硬件电路,图片,程序在内的全套资料!-Singlechip atmega8 developed MP3 player, effects and sound quality is very good, including the hardware circuit, pictures, procedures, including a full set of information!

HX8238 LCD Driver Spec.

51单片机基础训练项目之会唱歌的单片机。本例使用普通有源蜂鸣器，通过控制单片机输出频率来达到“唱歌”的目的。着重训练初学者对IO管脚的认识。-51 MCU-based training program in the microcontroller will be singing. In this case the use of ordinary active buzzer, by controlling the microcontroller output frequency to achieve the " singing" objective. Focus on training for beginners to the IO pin awareness.

51单片机用串口接收645规约。已经调试好 有详细的说明-51 single-chip receiver with serial port 645 of the Statute. Already have good debugging detail

基于ds12c887的电子时钟的C语言程序-Based on the electronic clock ds12c887 the C Language Program

简单的12864（控制器ST7920）液晶显示模块并行和总线方式控制c语言源程序-Simple 12864 (controller ST7920) liquid crystal display modules in parallel and bus control c language source code

PTR8000发送接收驱动程序。只需在主程序中只需做小小的改动就可以，使用这个模块！！！ -Send PTR8000 receive driver. Only in the main program in only small changes can make use of this module! ! !

详细介绍了彩色电视信号.可以用单片机也连接电视机显示图像了.-Details of color television signals. Singlechip can also connect a TV to display images.

单片机与AD9851控制程序，可输出预置频率正弦波-With the AD9851 single-chip control procedures can be preset output frequency sine wave