SANDISK公司的SD卡产品手册，对搞SD卡驱动的同志很有帮助。

各种型号的红外遥控芯片的码型及其参数，有助于编写解码程序-Various types of infrared remote-control chip, code-type and its parameters, contribute to the preparation of decoding procedure

This schematic and Gerber files of PCB that is used for GSM alarm system. This is industrial-grade system with many features like 1-wire (iButton) interface, additional interface for video camera (UART JPEG camera is used), SD card to store pictures from camera and send them by GSM to remote mobile phone. Can be used as a reference design for anyone who wants to make own GSM alarm system system based on SIM300C module from Simcom.-This is schematic and Gerber files of PCB that is used for GSM alarm system. This is industrial-grade system with many features like 1-wire (iButton) interface, additional interface for video camera (UART JPEG camera is used), SD card to store pictures from camera and send them by GSM to remote mobile phone. Can be used as a reference design for anyone who wants to make own GSM alarm system system based on SIM300C module from Simcom.

本文为电子大赛的最后提交文档，题目为简易数控直流电源，书写详细清楚，很好的参考样品-This contest final submission of electronic documents, entitled Simple NC DC power supply, writing more clear, a good reference sample

一款电脑ATx电源设计，使用Protel99打开-ATx a computer power supply design, the use of open Protel99

ICETEK-DM642-C评估板是一个低功耗独立的开发平台，使用户可以对TI的DM64x DSP系列进行评测和开发应用。ICETEK-DM642-C评估板还可以作为为TMS320DM642 DSP芯片设计的硬件参考板-ICETEK-DM642-C Evaluation Board is a low-power independent of the development platform, enables users to to TI

SNR versus detection range for both target types with and without pulse integration.-SNR versus detection range for both target types with and without pulse integration.

On the Hardware Implementation of the MUGI Pseudorandom Number Generator

在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一, 而如果系统中能使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能。文中从实际应用出发, 比较了几种可用于实现带通滤波器快速变频的方案, 选择了简单、实用的开关电容阵改变带通滤波器中心频率的方案-The use of frequency hopping in wireless communication technology is the most important anti-jamming in military communications, one of the means, and if the system can use the appropriate center frequency can be fast-tracked changes in frequency-hopping band-pass filter will be able to significantly improve the system anti-jamming性能. This paper from the actual application, the comparison of several band-pass filter can be used to achieve the rapid conversion of the program, choose a simple, practical switched capacitor array to change the center frequency of band-pass filter program

用于测量液滴的下降速度，并控制液瓶的高度-Used to measure the droplet rate of decline, and controlling the fluid bottle height

ch451是个重要的键盘和显示芯片，现在运用教广，是键盘和显示芯片首选，可以-ch451 is an important keyboard and display chips, and now widely taught to use is the keyboard and display chip of choice, you can