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51单片机智能循迹小车，c语言程序和教程(51 MCU intelligent tracking car c language tutorial program)

说明：  一个很通用的按键扫描程序，可用于单片机控制中(A very common key scanner can be used in the SCM)

关于51单片机和dac7811芯片之间通信的程序，可以正确模拟SPI串口通信，写入数据(On communication between 51 single chip microcomputer and dac7811 chip procedures, can correctly simulate the SPI serial communication, write data )

DHT11的C51驱动程序，4位数码管可以显示温度和湿度，带一触发按键(DHT11 C51 driver, four digital tube can display temperature and humidity, with a trigger button)

智能安防报警系统是集布防,检测,报警为一体的软硬件相结合智能化系统。(Intelligent security alarm system is a deployment, detection, alarm as one of the intelligent combination of hardware and software systems.)

三相电流表源程序 基于CS5460a 485通讯 遵循mudbus协议 测试成功(Three-phase ammeter source based CS5460a 485 communications follow mudbus protocol test )

单片机的计时器PWM模式实例代码，希望给相关的人员带来帮助。(Single chip timer mode PWM code examples, hope to the related personnel to bring help. )

单片机开发使用总结(Summing up the development of the use of single-chip microcomputer)

this program for student. toturial for gpio stm

调用研华PCL数据采集卡进行采集数据例程，很容易理解，舍弃了繁琐功能！(Call Advantech PCL data acquisition card for data collection routines, it is easy to understand, abandoning the cumbersome features!)