电子密码锁EEPROM-IIC 可修改密码

基于STM32平台开发振镜控制，可用于达标(Development of galvanometer control based on STM32 platform can be used for marking)

基于M0516的 ENC424J600的驱动程序(Based on the driver' s M0516 is ENC424J600)

说明：  串口发送数据，有需要的可以看看，或许会有帮助(Serial port to send data, there is a need to look at, may be helpful)

51单片机控制ADC和DAC转换的程序，仅供参考(51 MCU control ADC and DAC conversion process, for reference only)

大多数自行车速度表工作通过使用霍尔效应传感器固定在自行车前叉。磁铁是附加到前轮上的辐条之一,它将与霍尔效应开关一次革命的车轮。速度计监测传感器计数轮革命。如果知道车轮的直径,距离可以很容易地计算如果你知道有多少革命的车轮。此外,如果时间完成革命,平均速度也可以计算出来。 对于这个问题,您将编写一个程序来确定总距离(英里)和平均速度(英里每小时)考虑到车轮直径,革命的数量和总时间的旅行。你可以假定前轮从未离开地面,并没有下滑或打滑。(Most bicycle speedometers work by using a Hall Effect sensor fastened to the front fork of the bicycle. A magnet is attached to one of the spokes on the front wheel so that it will line up with the Hall Effect switch once per revolution of the wheel. The speedometer monitors the sensor to count wheel revolutions. If the diameter of the wheel is known, the distance traveled can be easily be calculated if you know how many revolutions the wheel has made. In addition, if the time it takes to complete the revolutions is known, the average speed can also be calculated. For this problem, you will write a program to determine the total distance traveled (in miles) and the average speed (in Miles Per Hour) given the wheel diameter, the number of revolutions and the total time of the trip. You can assume that the front wheel never leaves the ground, and there is no slipping or skidding.)

说明：  自动循迹小车仿真 有protues电路 有c程序(Auto-Tracking Vehicles have protues circuit simulation program c)

通过反转法循环扫描矩阵键盘，并通过数码管显示数据(By inversion method cyclic scan matrix keyboard, and through the digital display data)

说明：  51单片机学习资料 非常好 非超好 51单片机学习资料(1 single-chip learning materials very good non-super good 51 single-chip learning materials)

基于51单片机的AD9851模块驱动程序(Based on 51 single-chip AD9851 module driver)

STM32F103ZET6 实现 从SD卡读取jpg文件并显示在2.8英寸也液晶显示器上，串口可以看到每张图片的显示时间。(STM32F103ZET6 achieve read jpg files SD card and displayed on the LCD display is also 2.8 inches, the serial port can see each picture display time.)