基于GUI和DB技术的单机售票系统实现方案某运输公司决定为新的售票机开发车票销售终端软件TicketSellSys TSS。下图给出了TSS的销售面板示意图以及相关的控制部件。
售票机相关部件的作用如下所述:
①目的地键盘用来输人行程目的地的代码(例如,2U0表示总站)。
②乘客可以通过车票键盘选择车票种类(单程票、多次往返票和坐席种类)。
③继续/取消键盘上的取消按钮用于取消购票过程,继续按钮允许乘客连续购买多张票。
④显示屏显示所有的系统输出和用户提示信息。
⑤插卡口接受MCard(现金卡),硬币口和纸币槽接受现金。
⑥打印机用于输出车票。
⑦所有部件均可实现自检并恢复到初始状态。
假设TSS是单机系统,不考虑联网和并发,请试着完成如下任务:
试着基于GUI技术(java web, java swing, python皆可)和DB技术,来实现该单机系统。
任务1:基于之前所设计的系统逻辑架构图,完善各模块对应的类图设计。使用的系统逻辑架构图:
对应的类图设计:
任务2(大任务):试着基于GUI技术(java web, java swing, python皆可)和D ...
English
未读First, make a very general comparison
Second, compare specific numbers
时间跨度区间拆分列举合并
4 paragraphs:
Introduction - paraphrase the question
The bar chart compares the number of mobile phones sold worldwide by the five most popular manufacturers in the years 2009, 2011 and 2013.
Overview - 2 sentences, 2 main points
It is clear that Nokia sold the most mobile phones between 2009 and 2011, but Samsung became the best selling brand in 2013. Samsung and Apple saw the biggest rises in sales over th ...
English
未读compare the lines not describe them separately
First, make a very general comparison
Second, compare the lines at specific points
起始、交叉、趋势、峰值、平稳
Write at least one thing about each line
不要直接使用图表中给出的名词
4 paragraphs:
Introduction - paraphrase the question
The line graph compares the amount of electricity produced in France using four different sources of power over a period of 32 years.
Overview - 2 sentences, 2 main points
It is clear the nuclear power was by far the most important means of ...
一、实验目的本次实验的主要目的是了解静态路由的配置和实现原理,熟悉路由器的基本操作,掌握在网络中进行静态路由配置的方法和技巧。
二、实验软硬件环境windows 11Cisco Packet Tracer 6.2sv
三、实验内容及要求
实战拓扑图本实战演练的拓扑图如图所示,共4台路由器,两两之间通过串口线连接,每台路由器还设置一个环回接口用于测试,R1连接PC1用于测试。
实战需求(1)按照实验拓扑图连接好各设备。验证方法:利用CDP协议查看邻居表,命令为show cdp neighbors。(2)各设备进行基本配置,并测试直连链路连通性。配置各串行接口(serial)与各环回接口(loopback),配置完后测试直连链路连通性。环回接口的配置方法和普通接口类似,全局配置模式下配置:R1(config)# ip address 1.1.1.1 255.255.255.0因环回接口是逻辑接口,默认情况下是一直开启的,无需no shutdown。验证方法:通过show ip interface brief验证,查看各个接口状态。(3)分析静态路由。观察各路由器的直连子网有哪些,再观察各路 ...
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