With the development of network technology , the security problem of computer networks is becoming more important day by day . the problem mainly includes the information security in transmission and storage in network 随着计算机网络的发展与应用的日益普及，网络的安全问题也日益突出，主要表现为网络中的信息传输安全和存储安全。
Along with the progressive development of it and computer network of science and technology , computer is going to every field before the speed popularity had no , permeates all trades and professions live with people in 随着科学技术的进步，信息技术和计算机网络的发展，计算机正以前所未有的速度普及到各个领域，渗透到各行各业和人们生活之中。
Along with development of information especially the development of computer networks prompt the development of control system . so it made the control system has the trait of computer control bus n management and control integration . 随着信息技术的发展，计算机软硬件特别是计算机网络的发展也促进了控制系统的变化，使得控制系统计算机化、总线化、管控一体化、网络化和信息化。
As the popularization of education information and the development and reform of fundamental education , more and more active multimedia coursewares are applied in our teaching ; as the development and popularization of computer network , long - distance teaching is gain ground step by step 随着教育信息化的普及以及基础教育的改革与发展，课堂教学中越来越多的采用形象生动的多媒体课件。计算机网络的发展普及，使远程教学这种教学模式得到广泛应用。
Although computer technology , communication technology and all kinds of new software technology give a strong support for network , but until now it is still a problem that the development of network keep slow , and the new technologies have n ' t been used to its full range 虽然计算机技术、通信技术和各种新型软件技术的出现和逐步完善为计算机网络的发展提供了技术支撑，但是到目前为止网络的发展速度仍然很慢，各种新的技术在目前的网络中得不到充分的运用。
Through the development for many years , the database system has already developed into a kind of quite ripe data management system . but with the development of computer network , the security of the database system becomes the focal point that database developer and user pay close attention to more and more . various safe means are applied to development and use of the database progressively , including the safety certification mechanism in the system , safe precaution tool and backup of the system outside the system resume the mechanism etc . 经过多年的发展,数据库系统已经发展成为一种相当成熟的数据管理系统,在各行各业各种应用中都少不了数据库的支持,但随着计算机网络的发展以及对各种系统的开放式要求,数据库系统的安全越来越成为数据库开发者和使用者关注的重点,因此各种安全手段逐步应用于数据库的开发和使用,包括系统内的安全认证机制,系统外的安全防范工具以及系统的备份恢复机制等。
Based on the practical situation of highway manage corparation and the development trendency of network technique , this paper discusses the design model and module division of the highway network manage system from system analizing and software development , brings forward the concept of message platform ( mp ) and realizes it , detaily discusses the design method of electric file module and the system security , and briefely introduce the main idea of other module , for instance netmeeting , database etc . at last , in the light of above theory study , a flexible and practical compute software system is developed to be the effective management and auxiliary decision - making tool for highway management sectors 本文结合我国高速公路管理公司的实际情况以及计算机网络的发展趋势，从系统分析和软件开发的角度论述了“高速公路网络管理系统”的设计模型和模块划分，着重提出消息平台的概念并加以实现，详细讨论了电子公文模块、系统安全性的设计方法等内容，并对系统的其他模块如网络会议、数据库等的设计思路做了简要介绍。在上述设计和理论的基础上，设计开发了适合我国高速公路管理公司使用的软件系统，是高速公路管理公司有力的管理和辅助决策工具。
With the development of network and the coming of the post - pc era , the embedded system is becoming the center of interest in it and bringing along large market . embeded system also to occupy a rapid development and the steep competition time , the linux operating system took one kind of formidable open operating system , more comes the widespread application in the post - pc system 随着计算机网络的发展和后pc时代的到来,嵌入式系统成为当前it产业的焦点之一,并且呈现出巨大的市场需求。嵌入式系统也正处在一个飞速发展和激烈竞争的时期, linux操作系统作为一种强大的开放的操作系统,被越来广泛的应用于后pc系统中。
