【摘要】 机载计算机各模块之间的数据通信是通过数据背板总线互连实现的。不同的系统应用需求和计算机架构决定了如何选择数据背板总线。本文简要介绍了航空电子系统和计算机总线的发展。在介绍了目前较主流的CPCI总线和VME总线的工作原理与特点的基础上,对两种总线进行了比较,最终给出了两种总线在机载计算机领域的不同应用方向。更多还原

【Abstract】 Onboard computer modules communicate with each other through a backplane bus.Different computer architectures require different backplane buses.This paper briefly introduces the avionics system and the development of the computer buses.After introducing the CPCI bus and VME bus including their working principles and characteristics of the foundation as well as the comparison of these buses,,this paper presents the respective application of the two buses in the onboard computer field.更多还原