drawing

搭建onvif设备端代码 非常有用，可以配合ONVIF Device Manager测试(Device-side code to build onvif)

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)

基于51单片机的32和弦音乐盒程序，有曲目切换，音量调节，播放时间，步进电机驱动，流水灯等功能，是普通音乐的升级版本，且代码清晰，注释完整，结构合理。(Based on 51 single-chip 32 polyphonic music box procedures, switch tracks, adjust volume, play time, stepper motor drive, water lights and other functions, is an upgraded version of the ordinary music and clear code, comments, integrity, reasonable structure.)

该工具可以根据输入的UNICODE十六进制字符串计算出相应的汉字或ASCII码。比如：输入4F60便可以得到"你"。(The tool can be based on the input UNICODE calculate the corresponding hexadecimal string guy or ASCII.)

sine signal graphic visual c++ platform?????enter the frequency and the amplitude

单片机播放 音乐 是学习的好资料 音频学习

本源代码用于使用ATMEL公司的AT89C51芯片实现硬件mp3，其中包括有特色的mp3解码算法和U盘功能读写程序。(Source code for use ATMEL Corporation AT89C51 chip hardware mp3, have characteristics which include mp3 decoding algorithm and U disk function to read and write procedures.)

GC0111 是格科微电子（上海）有限公司2010 年最新研发的一款SOC 芯片， 将Sensor 和协处理器整合到了一颗芯片中，能实现的功能包括：支持EMI 接口 的sensor 预览/拍照/录像、SPI 接口的sensor 预览/拍照/录像、USB1.1 / USB2.0 full speed、 JPEG 压缩以及提供软T 卡、软Touch panel 的全套解决方案。GC0111 使得MTK 6223D/Infineon ULC3 等低端平台加一颗sensor 变成多媒体手机，降 低客户成本。 GC0110 是格科微电子（上海）有限公司最新推出的支持SPI 协议的CMOS 图像传感器芯片，采用GalaxyCore 最新的传感器工艺，并优化了电路结构，支 持JPEG 压缩，缩短拍照速度，提高用户体验，并支持录像功能。 (GC0111 is Geke Microelectronics (Shanghai) Co., Ltd. 2010, the latest development of a SOC chip Sensor and co-processor will be integrated into a single chip, to achieve the features include: support for EMI Interface The sensor Preview/photo/video, SPI interface sensor Preview/photo/video, USB1.1/USB2.0 full speed, JPEG compression and to provide soft-T card, soft Touch panel the full set of solutions. GC0111 Makes low-end platform MTK 6223D/Infineon ULC3 add a sensor into a multimedia mobile phone, drop Low customer cost. GC0110 is Geke Microelectronics (Shanghai) Co., Ltd. support the latest CMOS SPI protocol Image sensor chip, using the latest sensor technology GalaxyCore and optimize the circuit structure, support Support JPEG compression, reducing the speed camera to improve the user experience and supports video recording. )

说明：  24C08多花样流水，采用51开发板，编程使LED呈流水灯，初学者的好例子。(24C08 multi-pattern, running water, with 51 development board, program the LED lights were water, a good example for beginners.)

说明：  stc系列单片机的开发例程 各个模块都跳通过了 开发环境是 keil3(STC series MCU development routines in all modules jump through the development environment is keil3)