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c8051f020单片机的12864液晶显示 4行汉字 很简单的改变(c8051f020 microcontroller 12864 LCD 4 lines of Chinese characters is very simple change)

TCS3200传感器捕获方波频率，可以根据频率变化识别外部光源颜色(TCS3200 sensor to capture a square wave frequency, the frequency change can identify the external light source color)

利用easyx写的矩阵键盘仿真，希望可以给爱好者提供参考。(Use easyx wrote matrix keyboard emulation, hoping to provide a reference for enthusiasts.)

c++程序实现的JPEG图片到RGB565 16位的LCD显示的数据转换程序.(c++ program to achieve the JPEG image to RGB565 16-bit LCD display of the data conversion process. )

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

51单片机控制智能小车循迹小车c源程序5路循迹(51 MCU control smart car)

基于atmel studio 6，使用avr128单片机，实现超市导购机器人编程，直流电机结合颜色传感器实现自动巡线，5个舵机，3个自由度(Based on atmel studio 6, using avr128 microcontroller, to achieve the supermarket shopping guide robot programming, combined with the color sensor DC motor automatic transmission line, 5 servos, three degrees of freedom)

at89c51snd1单片机SCMM的mp3播放程序源码 (SCMM at89c51snd1 microcontroller mp3 player source code)

交通信号控制,适用于51单片机芯片上，运行环境为visual C(Traffic signal control, suitable for 51 MCU chip, the operating environment for the visual C)

读写器与射频卡通信的设计采用RC522射频读写芯片与射频卡进行通信，符合ISO14443规范协议；硬件系统设计中主要有AVR单片机主控模块、电源模块、存储模块、外部时钟模块、LCD模块；软件系统设计采用C语言，遵循模块化和结构化编程模式，设计了射频卡操作程序、软关机与自动关机程序、LCD显示、串行Flash存储器、外部时钟等外部设备驱动程序。所设计的手持式读写器具备对MF1 S50、S70射频卡的读写、实时状态显示、系统在线升级以及关机等功能。(This handset can process the data offline or online, reading and writing from 10 cm far. This handset is low-power, miniature, modular design and so on. This article includes: the communication design between RF card and Reader, hardware system design and software systems design. The communication design between RF card and Reader used to RC522 RF chip control RF cards, in line with ISO14443 standard protocol Hardware system design mainly include AVR microcontroller control modules, power modules, memory modules, external clock modules, LCD modules Software system designed with C programming language, and follow the modular structure of the programming model, and has the RF card operation procedures, soft shutdown and automatic shutdown procedures, LCD display, serial Flash memory, an external clock, and other external device driver Procedures. The handset readers has the MF1 S50, S70 RF card reader function, real-time status display function, the system online update function and so)