the conmunication of MCU by USB2.0

一个单片机字码编程的好工具，解决了汉字字码编程的麻烦

用单片机C语言编的通过键盘扫描得到键值的键盘扫描C程序的源代码，可供单片机开发人员参考。-MCU series of the C language keyboard scan keys keyboard scan C program"s source code available to developers SCM reference.

这是用ds18b20测试及显示温度的程序，主芯片是DS18B20-This is used to test and display the temperature ds18b20 procedures, the main chip is DS18B20

通过电脑串口读取传感器数据并进行实时显示-Via the computer serial port to read sensor data and real-time display

主要讲了单片机如何实现自行车测速功能。 十分好。-Mainly talked about how to achieve a bike speed microcontroller functionality. Very well.

all picture use for woman

航天金卡的资料，全中文的。 资料名称：FM1702中文使用说明书 内容简介：FM1702/1704/1705 通用读卡机芯片

这是一个周界报警的报警控制程序,采用89C52芯片,KEIL 51开发!-This is a perimeter alarm alarm control procedures used 89C52 chip development KEIL 51!

用AD603提高超声波测距范围。超声波测距是一种非接触的测量方式，它是根据超声波从发射传感器到反射物体，再从反射物体到接收传感器的延迟时间.，利用距离/01. 2 ’，得到距离值，1 为声波在空气介质中的传播速度。由于反射超声波接收时的信号幅度与反射物体离接收传感器的距离远近有关，一般相差几十分贝-Ultrasonic Distance Measurement with the scope of AD603 improve. Ultrasonic Distance Measurement is a non-contact measurement, which is the ultrasonic sensor to the reflection from the launch of objects, objects from the reflector to the receiving sensor delay time., The use of distance/01.2, the distance values, one for the sound waves in air medium velocity. Receive as a result of reflection at the time of ultrasonic signal amplitude and the reflection from the object to receive the sensor distance, generally a difference of tens of decibels

基于51单片机和ad9850实现的信号发生器程序实现输出1k-1m步进可调-51 Based on the AD9850 single-chip computer and realize the signal generator output procedures realize adjustable stepper 1k-1m