题目内容

A branch instruction in which the branch is always taken is _________.

A. conditional branch
B. unconditional branch
C. BRO
D. BRZ

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The registers in the CPU is divided _____registers and ________registers .

A. general purpose, user-visible
B. user-visible, control and status
C. data , address
D. general purpose, control and status

The range of n-bit twos complement representation is ___________.

A. 0 ~ 2n-1
B. -2n-1~ 2n-1
C. -2n-1~ 0
D. -2n-1~ 2n-1-1

In instruction, the number of addresses is 0, the operand(s)’address is implied, which is(are) in_______.

A. accumulator
B. program counter
C. top of stack
D. any register

The advantage of IMMEDIATE ADDRESSING is ___________.

A. limited address range
B. more memory access
C. limit value range
D. no memory access to fetch operand

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