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对矩阵键盘的程序编写，详细地讲述了如何扫描键盘的输入！(The matrix keyboard programming, detailed tells the story of how to scan the keyboard input!)

3． 参考void Reverse(LinkQueue &Q)函数，定义新的函数int Palindrome_Test(char str[])，判断字符串str是否回文序列,若是则返回1,否则返回0。写出程序或用文字描述算法的执行步骤。(3. Reference void Reverse (LinkQueue & Q) function, define a new function int Palindrome_Test (char str []), to determine whether the string str palindromic sequence, if it returns 1, otherwise it returns 0. Written procedures or describe in words the steps of the algorithm.)

敦泰科技触摸IC源码，非常好的C语言学习源码程序，(Touch IC source, Thai science and technology, a very good C language source code program,)

说明：  足球机器人小车总体设计思想及其单片机选型(The soccer robot car overall design thinking its microcontroller selection)

cc2530zigbee芯片英文资料，数据手册(cc2530zigbee chip information in English, Data Sheet)

按键控制LED灯的汇编程序，可实现按键控制LED灯的亮灭，主要是用汇编语言写的可以学习汇编(Button control keys to control LED lights LED lights LED light button control keys to control LED lights)

实现单片机与LABVIEW的串口通信。单片机部分的上载程序，只需用LABVIEW构建一个简单的输入与输出指令界面(LABVIEW MCU and serial communication. Single-chip part of the upload process, just use LABVIEW build a simple command interface, input and output)

HM20通用型压力变送器 资料很全 值得下载 (HM20 Universal Pressure Transmitter)

温湿度串口检测程序，实现对数据的读取和检测(Temperature and Humidity Serial Port Detection Program for Data Reading and Detection)

stm32输出四路pwm，能完成占空比可调，频率可变化的pwm(Stm32 four road PWM output, can finish the duty ratio is adjustable, can change the PWM frequency)