题目内容

【单选题】 If the word size is 2 bytes, a data bus with ( )wires is needed.

A. 2
B. 4
C. 8
D. 16

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【单选题】 If the memory has 2的32次幂 words, the address bus needs to have ( )wires.

A. 8
B. 16
C. 32
D. 64

【单选题】 A control bus with eight wires can define( ) operations.

A. 8
B. 16
C. 256
D. 512

【单选题】 The three steps in the running of a program on a computer are performed( ) in this specific order.

A. fetch, execute, and decode
B. decode, execute, and fetch
C. fetch, decode, and execute
D. decode, fetch, and execute

【单选题】 In the ( ) method to synchronize the operation of the CPU with the I/O device, the I/O device informs the CPU when it is ready for data transfer.

A. programmed I/O
B. interrupt-driven I/O
C. DMA
D. isolated I/O