某高校现有两个地理位置分离的分校区，每个校区入网信息点有2000多个，现准备通过科教网接入因特网，但从科教网只申请到4个C类网络（202.96.1.0——202.96.4.0），为了安全，要求每个分校区的学生公寓子网和教师子网不在同一广播域。同时，学校有若干台应用服务器，同时对内和对外提供Web等网络服务。
There are two separate campuses in a certain university. There are more than 2000 intranet information points in each campus. Now we are ready to access the Internet through the science and education network, but only 4 C networks (202.96.1.0 - 202.96.4.0) are applied from the science and education network. In order to be safe, the students' apartment network and the teacher subnet in each sub campus are not the same. Broadcast domain. At the same time, there are several application servers in the school, and Web and other Internet services are provided internally and externally. (2018-07-12, WORD, 227KB, 下载16次)
西安航空职业技术学院，为了紧追时代步伐，发展与校际互联、静态资源共享、动态信息发布、远程教学和协作工作的阶段，发展对学校教育现代化的建设，决定建设自己的校园网，争取尽早实现教育信息化。校园网建成后，将计算机引入教学各个环节，从而可以引起教学方法、教学手段、教学工具的重大革新。对提高教学质量，推动我国教育现代化的发展起着不可估量的作用。网络又为学校的管理者和老师提供了获取资源、协同工作的有效途径。校园网将会是学校提高管理水平、工作效率、改善教学质量的有力手段,也就是解决信息时代教育问题的基本工具。
通过对学校信息化建设专业人员沟通，了解到校园宽带网用户集中且网络流量大，关注网络的可运营和可管理特性，校园网建网需求如下：
1、教学区、宿舍区用户对校园网、教育网、INTERNET的访问有相应的路由策略。
2、校园网 存在 多个出 口需 求，校 园网 至少要 提供 中国教 育科 研网（ CERNET ）和 INTERNET两个出口。
Xi an Aeronautical Polytechnic Institute, in order to hot pursuit of the pace of the times, the development and inter-school connectivity, static resource sharing and dynamic information dissemination, distance learning and collaborative work in the stage of development the construction of the modernization of school education, decided to build their own campus network, and striveeducation information as soon as possible. After the completion of the campus network, the introduction of the computer all aspects of teaching, which can cause the teaching methods, teaching methods, the major innovation of the teaching tool. To improve the quality of teaching and promoting the development of China s modernization of education played an invaluable role. Network for school administrators and teachers access to resources, an effective way to work together. The campus network will be the schools to improve the level of management, work efficiency, a powerful means of improving the quality of tea (2012-06-10, WORD, 228KB, 下载3次)
这次毕业设计通过对它的学习、应用，以AT89C51芯片为核心，辅以必要的电路，设计了一个简易的电子时钟，是以单片机AT89C51为核心元件同时采用LED数码管显示器动态显示“时”，“分”，“秒”的现代计时装置。它由单片机作为数字钟的核心控制器，通过它的时钟信号进行实现计时功能，将其时间数据经单片机输出，利用显示器显示出来。通过键盘可以进行校时、定时等功能。输出设备显示器可以用液晶显示技术和数码管来显示技术。
模块化的设计和调试方法在整个课题研究过程中至关重要，事实上在任何设计中也同样关键和有效。
The graduation design based on the study and application, it is the core, with AT89C51 chips with the necessary circuit design, a simple electronic clock, based on single-chip AT89C51 as the core element using LED digital display dynamic display of the tube, "" points", "second" modern timing devices. It consists of single chip microcomputer as the core controller, digital clock through its clock signal timing function, will realize its time, using SCM outputs data display. Through the keyboard can be reset, timing etc. Function. Output devices with LCD monitors can technology and digital tube to display technology.
Modular design and debug method in the research process, in fact is crucial in any design is also the key and effective.
(2010-11-13, WORD, 410KB, 下载8次)
利用maxplus2完成
1、 完成带时、分、秒显示的24h计时功能；
2、 能完成整点报时功能，要求当数字钟的分和秒计数器计到59min52s时，驱动音响电路，四高一低，最后一声高声结束，整点时间到；
3、 完成对“时”和“分”的校时，并能对秒计数器清零。
Use maxplus2 completed one complete with hours, minutes, seconds, show 24h time functions 2, can complete the whole point timekeeping function, require that when the digital clock minutes, and seconds counter when the count to 59min52s, driver audio circuit, four high and one low, soon as the end of the last loud, the whole point of time to 3 to complete the " time" and " sub" when the school is also able to clear the seconds counter. (2009-11-01, WORD, 165KB, 下载7次)
数字电子钟是一种精确的计时工具，它精确显示秒、分、时，是一种比传统机械表更灵活方便的钟表。还可附加闹铃，报时等功能。因而在日常生活的各种领域应用广泛。数字电子钟由秒信号发生器、“时、分、秒”计数器，译码器及显示器，校时电路组成。秒信号发生器是整个系统的时基信号，作为秒脉冲送入计数器，计数结果通过“时、分、秒”译码器显示时间
Digital electric clock is an exact timing tool, it is precisely that, when, is a more flexible than the traditional mechanical clocks convenience. Still can add alarm, time, etc. Therefore in the daily life of various fields. Digital electric clock by the second signal generator, "when, minutes and seconds" decoder and monitor the counter, school, when the circuit. Second signal generator is the system of signal, as the yankees pulse, count results through to counter ", minutes and seconds "decoder shows the time. (2009-04-14, WORD, 86KB, 下载5次)
本作品采用Atmel公司的AT89C51单片机，以汇编语言为程序设计的基础，设计一个用四位数码管显示时、分的时钟。在实物图中，左边靠近电源的绿色发光二极管（长亮）是电源指示灯，表示的是5V稳定电源工作正常；单片机左下角红色发光二极管是秒灯，每闪烁一次表示时间走动一秒钟；按键正上方绿色发光二极管是设置灯，当时间正常走动时此时不亮，当第一次按下设置键（右键）时，此绿灯亮，同时秒时熄灭，且分钟的两位数码管出现闪烁，时间停止走动，进入校时状态，表示此时可以进行分钟的调整，当按一次加一键（左键）可实现分钟的加一功能，分钟以60分为极限，超出60分则返回数值0，从0再重新算起；如果再次按下设置键时，这时秒灯和设置灯仍旧保持熄灭和点亮状态，表示分钟的数码管停止闪烁，反过来表示小时的两位数码管则开始闪烁，此时可进行小时的调整，按加1键可实现小时的加1功能，小时调整以24为上限，同样超出24小时则从新回0；当第三次按下设置键时，数码管停止闪烁，设置灯熄灭，秒灯重新闪烁，时间以设定值计时。
err (2008-10-17, WORD, 467KB, 下载21次)
多功能数字钟设计
一、设计任务：
（一）主体功能
用HDL设计一个多功能数字钟，包含以下主要功能：
1.计时及校时，时间可以24小时制或12小时制显示
2.日历：显示年月日星期，及设定设定功能
3.跑表：启动/停止/保持显示/清除
4.闹钟：设定闹钟时间，整点提示
multifunctional design of a digital clock, design tasks : (1) the main function of HDL design with a multi-function digital clock, includes the following main functions : 1. metering and school, time can be 24 hours or 12 two-hour show. Calendar : Displays date weeks, Setting function and 3. stopwatch : start/stop/maintain Display/4 clearance. alarm clocks : Set an alarm time. suggested the whole point (2007-07-06, WORD, 304KB, 下载182次)
a.本系统是学校教材科内部的一个教材订购系统,实现教材的销售和采购。
b.本项目有学校教材科提出,由老师委托我小组开发,开发人员包括: 组长兼系统分析员：AAA、系统设计员：BBB、程序设计员：CCC、数据库管理员：DDD、数据操作员：EEE.统最终用户为教材科,由教材科提供计算网络。
c.该系统还和学校财务科进行资金数据来往,.由本系统向财务处提供销售情况,实行教材的安全发放和采购.并顺便和各书店联营向个别人员单独售书。
this is the school system within the Division, a textbook ordering system, achieving sales of materials and procurement. B. The project schools are teaching Branch, entrusted to me by teachers Development Group, developers include : head and systems analysts : AAA, the system designer : BBB, the programming staff : CCC, a database administrator : DDD, data Operator : EEE. End-EC families of the Division, the Division provides computing network. C. The system is also Finance and schools for financial data exchanges. The system from the Treasury to provide sales, implementation of the safety materials distribution and procurement. And the way the joint venture and the bookstore to separate individual Books. (2005-12-08, WORD, 17KB, 下载226次)