计算机软件

There are many differences in the software programming between Real-time embedded system and general-purpose computer system.

实时嵌入式系统的软件设计和技术与通用计算机系统下的传统软件方法有着很大的不同。

In recent years, computer hardware and software are developing at full speed. CPU speed and memory space are tremendously increasing. Color monitor and color plotter have made considerable progress. Software environments, such as WINDOWS and X- WINDOW, appeared, and their new editions are unceasingly renewed. Graphic normalization, for instance, GKS, PHIGS, OpenGL, CGM and POSTSCRIPT, are popularized one after another.

近年来计算机硬件和软件技术有了飞速的发展：运算速度和内储容量惊人提高，彩色显示器和彩色绘图仪长足发展， WINDOWS和X-WINDOW等软件环境出现及版本升级，GKS，PHIGS，OpenGL，CGM和POSTSCRIPT等绘图标准的先后推广使用。

In general, the design work with traditional measures is done by hand, which cannot meet the needs of the technology and manufacture. So the author has developed a CAD hydraulic design software fit for lower specific speed axial flow runner, which is easily operated by users.The main research work of this paper is as follows:1 Analyzing the main reason of axial flow power station cannot work well under littler volume of flow in some season and putting forward an improving scheme, pointing out the characters of design under abnormal factors.2 Combined with the development of the industry in our country, the abnormal hydraulic design method of propeller turbine is discussed based on present literature, data and experiment results.3 Guided by the design method of software engineering, a suit of hydraulic design software of Lower Specific Speed Axial Flow Runner is programmed by the object-oriented programming language Visual Basic and a straightforward, concise and standard Windows human-computer dialogue interface is designed for the system, which makes the operation of the system very convenient.4 ActiveX Automation technology is adopted as the interface with AutoCAD and the hydraulic drawings are edited, modified by AutoCAD until hydraulic model drawings according with the demand of engineering practice are output.5 To resolve practice problem, the author has designed a lower specific speed axial flow runner for Duowa Power Station through an example.

论文的主要内容有：1 深入分析很多轴流定桨式水电站枯水季节小流量下不能发电的主要原因，提出减容改造方案，并指出超常规条件下的改造设计特点。2 结合国情及行业发展需要，参考现有资料、文献和前人的研究成果，进行低比转速轴流式转轮叶片水力设计方法的研究，对轴流式转轮叶片的奇点分布法水力设计进行了全面的探索，结合现代计算机技术，找到了一种针对特殊条件的轴流式转轮叶片水力设计方法。3 仔细比较多种AutoCAD二次开发工具后，结合本课题的特点，选用Visual Basic语言，综合应用软件工程的设计思想，进行低比转速轴流式转轮叶片水力设计软件的编制，为系统设计了直观、简洁和标准的Windows人机对话界面，便于用户操作；编程时在考虑到设计条件特殊性的同时，尽量做到程序的通用性，使之可用于解决同一类问题；另外，大部分程序还可移植到普通轴流式转轮叶片水力设计中，具有良好的适应性。4 利用ActiveX Automation技术与AutoCAD接口，对AutoCAD进行二次开发，在AutoCAD下实现水力图的自动生成和编辑，直至输出符合实际工程要求的木模图。5 通过算例，为多哇水电站设计了一个低比转速轴流定桨式转轮，解决其在枯水期小流量下不能发电的问题。

This project describes amply the design processes of network middleware and the impletion processes of remote control chemical tanker operation and training software, including the middleware concept and essence of software design idea, computer program technology adopt in program-designed, network communication and so on.

本文详细讲述了网络中间件的开发过程和化学品船作业仿真培训软件的远程控制的实现过程，其中包括网络中间件的概念和本质、软件设计思想、程序设计中采用的计算机编程技术、网络通信技术等。

This paper introduced an application of IEEE-488 interface card for PCHardware and software were simple and practical.

本文介绍了一种计算机用IEEE-488接口卡的硬件和软件设计。硬件主要采用一块8255芯片，软件使用C语言。

Because stable contents design of courses is separated from variable instructional process design, it makes individual instruction realized easier. In order to improve the quality of instructional software and make the widely use of modem instructional theory, TMCS gives many supports for teaching models'construction. It ranges from interface design, basic instructional activities'construction, teaching model synthesizes, and instructional system programming automation. The TMCS makes the instructional theories interfuse with software development processes.

为了提高教学软件的教学效果，促进现代教学理论和教学模式的广泛使用，本文提出的教学模式构造体系MCS对教学模式提供了从界面设计、基本教学活动构造、教学模式合成、教学系统自动生成等多个层次计算机实现的支持，有效地促进了教学理论和软件设计过程的有机融合。

One of the important subjects of software engineering research is how to improve the maintainability of software.

问题的提出随着计算机技术在各行各业的应用普及，软件越来越多，软件维护的工作量也越来越大。

The Bit-slice computer Development System (BCDS 29/20) adopts IBM PC/XT as its host machine and its hardware comprises of microprogram controller, GP 256 programmer and HP 1630A logic analyser, while its software comprises of microcode generating, simulating, debugging and some other supporting programs.

BCDS29/20位片计算机开发系统的性能指标超过美国AMD公司1981年推出的Amsys29/10产品。该系统选用IBM PC/XT作为宿主机，硬件系统包括微程序控制器、GP256编程器和HP1630A逻辑分析仪等部件，软件系统包括微码生成、模拟、调试及其它支持软件。

But using object oriented programming to study Finite Element is a new method to design and construct Finite Element.

本文从计算机科学的角度出发，将电磁场数值分析方法与软件科学相结合，研究了面向对象有限元方法的原理，设计了电磁场数值分析可视化软件系统。

You can simply download some cool software to your home computer and POOF; no more spyware.

您只需下载一些很酷的软件，您的家庭计算机和POOF ；没有更多的间谍软件。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。