一种基于FPGA的电磁理疗仪，可以根据需要选择可变的随机频率...

用VXD技术实现的文件系统保护程序示例.-using VXD Technology File System Protection examples.

DB4730_Libra_wince Ingenic-DB4730_Libra_wince Ingenic

华为 Quidway 系列多协议路由器，支持 PPP、FR、X25、SLIP、HDLC 等网络协议，用户可通过各种广域网线路接入 Internet 及互联互访。 路由器内置安全防火墙、NAT、RADIUS 安全认证，以及 CALL BACK 等多项互联安全防护功能；并通过 CA 认证协议的验证和 IPSec 隧道协议，在 Internet 上构建安全可靠的网络通道，基于硬件的数据加密，将保密数据加密后在隧道上传输，加密数据有可靠的保密性但牺牲了效率；非保密数据可以通过一般性安全处理在隧道上传输，保证较高的转发速率。硬件加密的算法采用专门的芯片（经过国家相关部门批准）进行加密，密钥长度大于 128 位，并提供高强度的一次一密功能。配合完全自主知识产权的软硬件平台，提供网络的安全互联和数据的安全传输的安全解决方案。 而 "备份中心"的可靠性备份解决方案，实现多种线路之间的任意备份和业务分担，为网络提供业界最坚固的保护屏障，保证网络的可靠运行。-Huawei Quidway series of multi-protocol routers to support PPP, FR, X25, SLIP, HDLC and other network protocols, users can through various WAN lines and Internet access to the Internet visits. Built-in security firewall router, NAT, RADIUS authentication, and a number of other CALL BACK Internet security protection functions; And through CA and validation of the agreement IPSec agreement on the Internet to establish a secure and reliable network access, hardware-based data encryption, data encryption confidentiality the tunnels on the Tunnel, a reliable data encryptio

文中介绍一种不用光耦就可以实现隔离的方法-This paper introduces an optocoupler can be achieved without isolation method

AVR和51单片机中断写法的区别及其一些基本要点的区别等很值得一看-AVR microcontroller interrupts and 51 the difference between writing and some of the basic elements of the difference is worth a visit, etc.

清华大学计算机系列教材 计算机系统结构（第三版）-series teaching computer system architecture (third edition)

this the minarm system that ihad been designed

数据库设计概要说明书，帮助大家进行数据库设计-Database Design fact sheet

试种表盘设计c语言程序，包括表盘刻度形状，时针形状、分针形状、秒针形状，以及表的喀嗒声。-grown dial c language program design, including dial calibration shape, anti-clockwise shape, looked shape hands of shape, Table and the acoustic Caledonia despair.

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