xdcc

说明：  stm32f103测正弦波、方波的波形频率。(Measurement of waveform frequency by STM32F103.)

用nokia3310显示器做的温度时间控制器，芯片是89c51，ds1820。(nokia3310，89c51，ds1820。)

复杂的数码管动态显示和流水灯，分别用两个定时器做中断(Complex digital dynamic display and light water, respectively, two timers interrupt)

一个简单的贪吃蛇程序，asdw键控制蛇上下左右，会一直加速，可以保存最高记录，可以通过改很少的参数改变界面大小、蛇的初速度与加速度。(A simple Snake program, asdw control the snake up and down, will always speed up, you can save the record, you can change a few parameters change the interface size, snake initial velocity and acceleration.)

矩阵键盘密码锁+简易计算器，C52的单片机平台，C语言开发，适用于初学学习。(Matrix keyboard lock+ simple calculator, C52 MCU platform, C language development, suitable for beginners to learn.)

用keil编写的c文件，用来测试使用pcf7586的黑白液晶显示模组。(C file with keil prepared to test pcf7586 black and white liquid crystal display module.)

51单片机运用PCF8591实现数模莫属转换（i2c协议） 1利用PCF8591 串行A/D 转换器转换电位器输入模拟电压，并在LED数码管上显示电压值（精确到2 位小数），实现数字电压表功能。 2在基本部分基础上，利用 PCF8591 的D/A 通道实现一个固定频率的方波（频率范围10~50Hz），并在虚拟示波器上输出。(51 MCU using PCF8591 to realize the digital to analog conversion (I2C) is 1 using PCF8591 serial A/D converter to convert the input analog voltage potentiometer, and in the digital tube LED display voltage values (accurate to 2 decimal places), the realization of digital voltage meter function. 2 in the basic part of basis, the realization of a fixed frequency Fang Bo using D/A channel PCF8591 (10~50Hz frequency range), and the output in a virtual oscilloscope.)

说明：  PE4302正点原子minif103的驱动代码，串行模式，使用请将P/S口接到高电平（最好直接接到单片机3.3V输出口）(Driver code of minif103 of PE4302 punctual atom, serial mode, please connect P/S port to high level (preferably directly to MCU 3.3V output port))

基于AT24C0x和89c52的IIC总线连接与设计及源码(AT24C0x based on the 89C52 and IIC bus connection with the design and source code)

最新版本的EasyARM615实验例程，各种外设的例程，写得非常详细(The latest version of EasyARM615 test routines, the routines of various peripherals, written in great detail)