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说明：  MFRC522射频读卡器数据手册 IC-S50数据手册 包含相关性能简介(MFRC522 Radio Frequency Card Reader Data Manual IC-S50 Data Manual Contains a Brief Introduction to Related Performance)

simulink of dynamic voltage restorer 2

用stm32单片机制作一个时间显示界面可以触摸设置时间(Stm32 microcontroller produced by a set time period can touch display interface)

使用8051通过双积分电路检测电压的程序(8051 by a double integral circuit detection voltage of procedures)

唐会完美源码可以用作自己研究后台账号和密码admin 123456 前台账号和密码123456 123456(Don will be a perfect source)

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.)

MSP430F149下DDS例程 AD9850 并且用按键选择频率 (MSP430F149 under routine AD9850 DDS and frequency with button choose)

MSP430 RFID源程序 非常有用 很好的东西(MSP430 RFID source Very useful Good stuff)

基于卡尔曼滤波的MPU6050例程，效果很好。(Based on the Calman filter MPU6050 routine, the effect is very good.)

总线操作法点亮led,非常好的入门教程。(zong xian cao zuo fa dian liang led zong xian cao zuo fa dian liang led)