Huffman tree. tree with the right path length is the meaning of the various char...

本文的内容是从概念上介绍USB软驱固件设计的各个步骤，这些步骤中的重点在于USB设备的枚举，Mass Storage CBI协议/UFI命令的处理以及本设计中所采用的DataFlash AT45DB161B的读写。-the content of the paper is to introduce the concept of USB floppy drive firmware design of the various steps These steps will focus on the USB device enumeration. Mass Storage CBI agreements/UFI order processing and the design used by the DataF lash AT45DB161B literacy.

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

Boost电原理图，开关电源有时候会用到该电路，可参考其计算变量-Boost electrical schematics, switching power supply can sometimes be used in the circuit, refer to the calculation of variables

这个是一个单片机开发和电子设计的文档，用于模拟与数字转换的资料。-This is a single-chip development and electronic design documents for the conversion analog and digital information.

关于sine函数的生成 生成的sine函数是32X48的-sine function on the formation of generating sine function is the 32X48

AN FPGA-BASED IMPLEMENTATION FOR MEDIAN FILTER MEETING THE REAL-TIME　REQUIREMENTS OF AUTOMATED VISUAL INSPECTION SYSTEMS-AN FPGA-BASED IMPLEMENTATION FOR MEDIANFILTER MEETING THE REAL-TIME REQUIREMENTS OFAUTOMATED VISUAL INSPECTION SYSTEMS

LPC2378 protel sch and PCB

这是一份关于网络工程的课程设计报告详细介绍布线的方案-This is a network works on the design of a detailed report on the program Cabling

网友用VC6编写的机房管理系统，内附源代码。-netizen with the VC6 preparation room management system, containing the source code.

设计一个可以顺计时和倒计时的秒表。要求计时的范围为00.0S~99.9S，用三位数码管显示，用三个发光二极管正确显示以下状态：倒计时状态、顺计时状态、待机状态-Designed to be a cis-timing and countdown stopwatch. Required time ranges from 00.0S ~ 99.9S, with three digital tube display, with three light-emitting diode display correctly the following states: the countdown state, cis-time status, standby mode