Page 9 of 16
#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
Page 9 of 16