这是一个键盘的单片机小程序，适合于初学者学习

第二近轴光的实际参数.cpp 近轴光线计算-The second shaft of light near the actual parameters. Cpp

本系统采用MSC-51系列单片机ATSC51和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器，实现了能根据实际车流量通过8051芯片的P1口设置红、绿灯燃亮时间的功能；红绿灯循环点亮，倒计时剩5秒时黄灯闪烁警示（交通灯信号通过PA口输出，显示时间直接通过8255的PC口输出至双位数码管）；车辆闯红灯报警；绿灯时间可检测车流量并可通过双位数码管显示。本系统实用性强、操作简单、扩展功能强。 -The system uses MSC-51 series single-chip ATSC51 and programmable parallel I/O interface chip 8255A-centric device designed to control traffic lights, can be achieved in accordance with the actual traffic flow through the P1 port 8051 chip set red, green fuel Liang function of time traffic light cycle, the countdown five seconds left when the yellow light flashing warning (traffic lights through the PA output signal indicates the time directly through the PC port output 8255 to double-digits) vehicle alarm闯红灯 green time traffic flow can be detected through a double-digital display. The system practical, simple and strong extensions.

温度传感器ds18b20调试源代码，已经调试好的代码，可以直接使用。-Temperature sensor DS18B20 debugging source code, have a good debugging code can be used directly.

已经调试成功的程序，在CVAVR中实现的。-Debugging process has been successful in achieving the CVAVR.

测试频率 基于C8051F330单片机的频率测试 频率测试精度：0.1Hz-testing frequency C8051F330 microcontroller based on the frequency of testing frequency accuracy : 0.1Hz

能完成对小车的往返，转向，速度的控制，小车能在慢速区慢跑，快速区快跑-completion of the car, from steering and speed control, the car will slow, jogging and rapid sprints District

89s51与CS5532应用，模拟SPI通信，初始化及接受-89s51 with CS5532 applications, simulation SPI communication, initialization and acceptance of

・单片机系统中的汉字显.. ・c51的usb的通信.. ・ADC0809做的数.. ・基于avr单片机系统.. ・单片机usb2.0 ・单片机系统中的汉字显.. ・c51的usb的通信.. ・ADC0809做的数.. ・基于avr单片机系统.. ・单片机usb2.0 -SCM system of Chinese characters .. c51 marked the usb communications .. ADC0809 so few .. avr microcontroller-based system .. USB 2.0 SCM SCM system of Chinese characters .. c51 marked the usb communications .. ADC0809 so few .. avr microcontroller-based system .. USB 2.0 Microcontroller

独具一格，只用一个I/O资源就可测出常用的NEC格式IR 遥控码-a unique and use only one I/O resources can be used to measure the NEC format IR remote control code