With the fast development of science and technology , more and more information processing abilities of computer are required 随着科学技术的发展，人们对计算机处理信息能力的要求愈来愈高，但是传统的计算机体系结构由于其自身内在的限制显得力不从心。
It is much more convenience for user to program , debug and run the quantum program . it also can be used to research and simulate on quantum architecture 该系统是一个集成开发环境，便于用户设计、调试和运行量子程序，同时也能支持对量子计算机体系结构的研究和模拟。
It is more important to research the quantum computer architecture and use various techniques in existence to build a quantum computer with high performance and low price 研究量子计算机体系结构，探索如何利用现有的技术来构造高性价比的量子计算机系统具有重要意义。但目前这方面的研究还比较少。
Once these changes ( dual mode , privileged instructions , memory protection , timer interrupt ) have been made to the basic computer architecture , it is possible to write a correct operating system 一旦对一个基本的计算机体系结构完成了以上修改（双模式、特许指令、内存保护、定时器中断） ，就有可能写出正确的操作系统。
With the fast development of the computer network technology , the computer architecture developed from concentrated model to two - layer client / server model , and then to three - layer client / server model 随着计算机软硬件和网络技术的不断发展，计算机体系结构经历了从单机时代的集中式结构到局域网时代的两层c / s结构，到互联网时代的三层c / s结构发展。
With the change of the computer architecture and the development of middle - ware technology , the application server acted as the middle - ware " platform is becoming one of the most popular trend in the recent software research domain 随着计算机体系结构的变化，中间件技术的迅猛发展，应用服务器作为中间件技术的运行平台逐步成为近年来软件业的发展趋势之一。
In the part of component technology , com / dcom / com + component technology is introduced , which is sponsored by microsoft . in the part of distributed multi - tier application , the variation of the architecture of computer systems and the superiorities of three - tier architecture are presented 在组件技术这一部分中，介绍了微软的com dcom com +组件技术；在分布式多层应用这一部分中，介绍了计算机体系结构的变迁和三层结构的优越性。
So , we must design multimedia application - oriented computer architecture to fit the data processing demand of video compressing programs , we analyzed the parallelism of two representative video compressing programs - opendivx and tml9 , and drew a conclusion that it is effective to run video compressing application programs on the processor which uses parallel arithmetic units 相对于视频压缩应用而言，普通计算机的处理能力大大落后于处理需求。因此，对于多媒体应用，必须采用并行的方法来解决，但是不能简单地使用普通并行机，必须针对这部分应用的特点，采用并行的思想来设计面向多媒体应用的计算机体系结构。
Because of the reason of history , a large amount of various different database that constructed exist on the network , in a lot of respects , there are several the following respects mainly in their different constructing nature behavior : 1 ) the constructing differently of system structure of the computer , each database is running in the mainframe , the microcomputer is , in work station , pc or embedded system ; 2 ) the constructing differently of basic operating system , the basic operating system of each database system can be unix , windows nt , linux . etc . ; 3 ) the constructing differently of dmbs itself can be all oracle of the database system of relation type , sql server , etc . , it can be a database of different data models too , such as relation , mode , level , network , target of facing , the database of function type ; 4 ) the structure of the data and sometime are constructed differently , each different databases are used and adopt different data structure and sometime expression way systematically 随着internet的发展，网络上存在着大量多样异构的数据库，它们的异构性表现在多个方面，主要有如下几个方面： 1 )计算机体系结构的异构，各个数据库运行在大型机，小型机、工作站、 pc或嵌入式系统中； 2 )基础操作系统的异构，各个数据库系统的基础操作系统可以是unix 、 windowsnt 、 linux等； 3 ) dbms本身的异构，可以是同为关系型数据库系统的oracle 、 sqlserver等，也可以是不同数据模型的数据库，如关系、模式、层次、网络、面向对象，函数型数据库； 4 )数据结构及语义异构，各个不同的数据库应用系统采用不同的数据结构和语义表达方式。
It aims at reducing the number of execution cycles of instructions , and has experienced from the period of single issue architecture to the period of multiple issue architecture . in the past twenty years , risc has become more and more mature abroad . it makes great sense to develop our own risc and it is a effective way to develop our own risc with the instruction set which is compatible with those of risc which has been widely used 80年代初出现的risc技术是计算机体系结构的重大变革，它以减少指令执行的平均周期数为结构设计的主要目标，经历了从单发射结构到多发射结构的演变过程，解决了深度流水技术、相关技术、转移预测技术、编译优化技术等一系列技术难点，在20多年的时间里， risc技术的发展已日趋成熟与完善微处理器在军事和民用领域都有着广泛的应用，研制具有我国自主独立版权的微处理器在当今具有重大意义。
