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#65 which of the following register has a special role in multiply and divide operations ?
A)   Base register
B)   Memory buffer register
C)   Data register
D)   Counter register
Answer:   A
#66 ________ Register holds either the address of the instruction being executed or the address of the next instruction to be executed .
A)   Program counter
B)   Memory buffer register
C)   Data register
D)   Counter register
Answer:   A
#67 System bus connects the central processing unit to ___________ on the motherboard .
A)   Register
B)   Main memory
C)   ALU
D)   Input unit
Answer:   B
#68 which of the following steps in the instruction cycle interprets the instruction?
A)   Fetch
B)   Decode
C)   Execute
D)   Write-back
Answer:   B
#69 __________ instruction is used when number of statements is to be repeated.
A)   LD
B)   LOOP
C)   JMP
D)   MOV
Answer:   B
#70 _________ is a microprocessor architecture that is designed to perform a small number of computer instructions.
A)   RISK
B)   CISC
C)   DISK
D)   LIST
Answer:   A
#71 How many op-codes do a zero-Address instruction has?
A)   1
B)   2
C)   3
D)   0
Answer:   A
#72 which of the following is not arithmetic instruction?
A)   DIV
B)   MUL
C)   SUB
D)   JMP
Answer:   D
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