会议计时器，以MCS51单片机为核心，实现会议演讲定时提醒功能，可以进行设定时间，倒计时，暂停，蜂鸣器提醒或灯光提醒等功能...

RC500开发全套资料,内有详细经过测试详细资料。-RC500 development of a full set of information, which has been tested in detail more details.

FreeRTOS免费的开源实时操作系统，FreeRTOS的官方移植文档-FreeRTOS free open-source real-time operating system, FreeRTOS official Portable Document

利用实验板上的89C51,8279,LED,LCD等资源设计篮球比赛记时记分器，要求能够显示当前比赛时间和双方比分、剩余时间、24秒倒计时-The use of experimental board 89C51, 8279, LED, LCD and other resources designed basketball game when the scoreboard in mind, and asked to display the current game time and both scores, the remaining time, 24 seconds countdown

AT91SAM7S64调试笔记AT91SAM7S64CommissioningNotes-AT91SAM7S64 debug AT91SAM7S64CommissioningNotes Notes

超声波测剧驱动 40KHZ 频率 范围达到50CM 以上-Ultrasonic measurement-driven drama 40KHz frequency range to reach more than 50CM

利用ps2键盘向单片机输入数据，这样做不仅可以减少输入输出口，而且程序代码短小精悍，可以极大的提高单片机的执行效率．-Ps2 keyboard to use single-chip input data, to do so not only can reduce the input and output port, and program code dapper, you can greatly improve efficiency in the implementation of SCM.

单片机在液晶上实现菜单-To achieve single-chip LCD menu !!!!!!!!!!!

基于CY7C68013A的mouse+keyboard混合USB外设应用范例。本套代码使用多个报表描述符实现复合设备。与之相对的另一种方案是使用多个interface，该方案另行上传。-This project focuses on building a mouse+ keyboard hybrid USB device with the popular Cypress CY7C68013A chip. Implementation is based on a multiple ReportDescriptor solution. Please refer to CY3684 dev kit documentation for more details regarding hardware platform.

51单片机矩阵键盘的设计与调试，建议使用52单片机。-51 Single-chip design of the keyboard matrix and debugging, it is recommended to use single-chip microcomputer 52.

在proteus可以实现国际象棋功能！！ ！1-Proteus can be achieved in the chess features! ! ! 1