电脑的CPU速度越来越快；内存、外存的容量越来越大；电脑的外设也越来越多、功能越来越强。电脑的发展中有一样东西容易为人们所忽视，那就是总线──Bus。总线不太“露面”，可它却是个幕后指挥，内存、外存、外设间如果没有它的协调，则根本无法工作，有人将它比作电脑的“ Computer CPU faster and faster; memory, external storage capacity is growing; more and more computer peripherals, more powerful. There is one thing in the development of computers that is easily overlooked by people, that is the bus - Bus. Bus is not “appearance”, but it is a command behind the scenes, memory, memory, peripherals without its coordination, it simply can not work, it was compared to the computer’s "