The mechanism whereby address information and data are transferred between the switch register (SR) and the processor,between the processor and memory, between the memory and the I/O interface, and between the processor and the I/O interface.; 在開關寄存器與處理機、處理機與內(nèi)存、內(nèi)存與輸入輸出接口及處理機與輸入輸出接口 之間傳輸?shù)刂沸畔⒑蛿?shù)據(jù)的機件。