PCI作为一种稳定的高速的设备扩展总线，因其良好的可扩展性和兼容性使其经历了20多年的使用，PCI协议规范不断扩展、更新。现在更有PCI-X、PCI-E总线的不断涌现，虽然说它们与PCI总线不能够兼容使用，但它们无疑都是都在PCI总线的基础上发展而来的。-PCI as a stable high-speed device extension bus, because of its good scalability and compatibility make its experience in more than 20 years of use, PCI agreement standard expanding, updated. Now more PCI-X, PCI E bus are constantly emerging, although they can t compatible with PCI bus is used, but they certainly are all in the PCI bus and develops on the basis of.