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单片机学习，光敏和热敏电阻实验中的DA-AD转换程序(MCU learning, photosensitive and thermistor experiment DA-AD conversion program)

基于MSP430的CC1100的无线温度采集系统的设计，方便大家学习交流！！！！！！！！(MSP430 design of CC1100 wireless temperature acquisition system based on exchange to facilitate learning! ! ! ! ! ! ! !)

STM32F103RB USB模拟串口范例，参考官方版本，改写双缓冲+环型队列接收，改写环节队列发送。工程开发环境为COOCOX IDE。(STM32F103RB USB virtual serial port example, refer to the official version, rewritten double buffering+ ring queue receiver, rewritten ring queue to send. Development environment for COOCOX IDE.)

模拟电梯控制系统程序设计代码，用户可输入任意楼层，程序有先来先服务策略和顺便服务策略。(Elevator control system design simulation program code, the user can enter any floor, the program has first come first serve policy and the way services strategy.)

在PIC18f452单片机上运行的自动贩卖机的程序。实物有两个按键，用LCD1602显示。(MCU running at PIC18f452 vending machine program. There are two buttons in kind, with LCD1602 display.)

MPU 6050 51单片机测试程序，包含串口通讯和1602显示屏显示(MPU 6050 51 SCM test procedures, including serial communications and display 1602)

T5557卡的读写程序，KEIL4平台，曼彻斯特解码(T5557 card reader procedures, KEIL4 platform, Manchester decoding)

说明：  DAC DMA成功输出正弦波，详细说明在程序中都有备注(DAC DMA Successfully Output Sinusoidal Wave)

Mapreduce实现的TF-IDF词频统计分析，可以直接运行于HADOOP环境下(Analysis of TF-IDF statistical Mapreduce to achieve, can be directly run in HADOOP environment )

51单片机的矩阵键盘的介绍，编程实现计算器功能并在led上显示(51 MCU matrix keyboard introduction, programming calculator functions and the led display)