| With the market of telecommunications becoming open and free,many powerful company think it was good and want to be members in the market.The bnsinessmenn doing telecommunication are facing more and more complex competation enviroment.Now,there have been seven synthetic compernies and 2500 valve added telecommunications service company.the common service in telecommunication and the communication between different internets have been necessary.Because the price of telecommunication falls a lot and the need of telecommunication products.increase,too,a pluralistic telecommunication marker afferd a valnable chance to the development of eletric circuit for renting out.From the sitration of operating telecommunication the new digital electric circnit for renting out have been used in the market.such as government,companies,industry and commerce,taxation affairs,banks,securities,insurance,civil aviation,petroleum meteorological phenomena,culture,education because of its perfect funtion.so digital eletric circuit for renting outhas been the source of pay in the work of renting and protecting.These years because of the new technology and long—distance optical cable.the total cost to rent and protect the eletric circuit has fallen a lot.with the development and usage of internet and long—distance education,the need of the work of renting and protecting,especially the need of renting eletric circuit has increased,too.To improve national economy to develope to decrease nennecessary construction to share thecommunication resources the work of rerting eletric circuit and protecting increases much faster,so to develop a sisterm for rerting and protecting is very nessary.This essay is to solve the problems.to design and realize a systerm that computers are used to be helpful tools in the work of renting and protecting.the systerm needs to have a streen that we can see infornation on it.try out best to make all steps automatic any make it provide nelated information.according to advantage of AnShan"Nine Seven"systerm,when we developed this systerm,we fully consulted the way of other governing work.it baced on"Nine Seven"systerm,and has the most important part"Nine Seven"systerm.In this systerm,we can deal with all information and data.because of this we build too database to store these too most important date information:GD-LZDW and DA-CZDW.besides that,the change of GD-CZDW mast be saved as a basis that we can find out the records of users by database.So we build DA_CZDW_LS.After building the database.we can begin to compile the order.IN this step,we can use Form and REPORT to design and compile the order.In this step ,I bear responsibility for designing the code.because getting cost and dealing are done by person.Making them work as one can be very convenient,the people can do two things at the same time.acvording to the reqrest of work.put the information of new user on the screen.the systerm can produce some numbers automatially at last the data and numbers can be saved in GD_CZDW and wait to deal with in the next step.the work of renting and protecting needs transmition.according to the reqrest,we devide the function into two:æ–½å·¥å•æ‰“å°and施工å•回å•.After finishing desining the order,we use"black box"to test the systerm,according to the results,try to fing out the mistakes and careless omission,to make the systerm perfect.In the end ,I'm sure all the function can come ture and the systerm has been used in Anshan.and it plays an important part in the life.Recently,the number of users and income per year has increased very fast.the systerm is useful to prevent many mistakes and it can give users the recept,development of this work make the systerm play more and more important part in the renting and protecting.Besides that,because of the high pay in this work.There are only some rich users.this systerm can give much better service to the rich users.It can bring us more money.Now,the systerm has been used formally.It can increase the efficiency and save a lot of money.It give telecommunication company a good example. Character of this system is very safe and open.It can save all the data safely.never lose and data.There is no system doing beeter than it.Considering the development of the work in the future.we designed the order as a system that many jobs can do at the same time.to make sure we can improve the order in the future.This system can be used in Windows 9x/2000/xp and it is very easy to learn and control.In a word,according to the situation of the development of renting and protecting,we analyse the function of the systerm.we think it provids a good way to decrease the number of the tasks by using a computer.But the systerm still has some problems.It needs to improve in many ways .such asä¼ è¾“æœºæˆ¿é€€å•功能,so we don't usethis function these days.So the deveolpment of the work can make the functions of the systerm perfect. |