计算机I／O总线结构的现状与发展趋势

1 引言计算机的总体性能主要依赖于它的五个主要组成部分的性能,即处理器、内存、总线、存储器和显示子系统等。在过去十多年里,计算机的各个组成部分的性能有了不同程度的提高,尤其是作为处理核心的微处理器的性能更是得到了长足的发展;但是,整个计算机的体系结构仍基本沿用了基于共享

Current Situation and Development Trend of Computer I/O Bus Architecture

With the improvement of the performance of all components of computers,Shared Bus,which is the kernel of the traditional computer architecture,has gradually become the bottleneck of the system. This paper presents the limitations of the Shared Bus. From analyzing the new specifications of the bus .which are used to solve the bottleneck brought by shared bus ,it sums up the characteristics of the new technologies from their orientations in the level of the architecture. Then by analyzing and comparing the advantages of each new technology, this paper points out the new orientation of the bus technology.