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基于单片机开发的无线识别装置系统中使用的应答器程序代码(The development of microcontroller-based system using wireless identification device transponder code)

超声波测距，可以通过串口助手显示，当小于设定值时，显示0，当大于设定值时，显示1(Ultrasonic Ranging, through serial aides showed that when less than the set value, 0, when greater than the set value, indicating a)

温湿度传感器DHT11的C语言驱动程序，珂用于单片机的开发与应用。(Temperature and humidity sensors DHT11 C language driver, Ke for the development and application of SCM.)

通过51单片机串行转并行，扩展IO口，实现四个步进电动机的控制。(By 51 microcontroller serial to parallel IO expansion port, to achieve four stepper motor control.)

单片机课程设计 电子压力器的工作原理 电子压力器由压力传感器，A/D转换器，数码显示等组成。 (MCU Design pressure of the working principle electronic pressure is controlled by electronic pressure sensor, A/D converter, digital display and other components.)

桌面监视器,带键盘监视功能 可用于关闭一些广告窗口或不希望出现的任意窗口,键盘监视功能带回放器,可播放鼠标键盘的操作过程(desktop monitor, with the keyboard function can be used to monitor the closure of some advertising window or do not want to see is the arbitrary window, Keyboard surveillance function with playback device that can broadcast mouse keyboard operation process)

说明：  一个PS2键盘单片机, 使用Philips的接口+8051,写的不错,非常值得学习.(a PS2 keyboard microcontroller, the use of the interface, Philips 8051, was a good, very worth learning.)

stm32学习 十三：RS485总线的使用 十四：TFT屏的图片，中文和字符显示(stm32 learning 13: RS485 bus use 14: TFT screen pictures, Chinese, and character)

使用IO口模拟I2C时序，包括主机、从机时序。(Using IO port simulation I2C timing, including the host, the machine timing.)

SPI3完整代码适用2401的2.4G通信(SPI3 complete code for 2401 of 2.4 G communication SPI3 complete code for 2401 of 2.4 G communications)