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#71 _________ Register can perform arithmetic and data movement and it has some special addressing abilities.
A) Base register
B) Memory buffer register
C) Data register
D) Counter register
Answer: A
#72 ________ 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
#73 System bus connects the central processing unit to ___________ on the motherboard .
A) Register
B) Main memory
C) ALU
D) Input unit
Answer: B
#74 __________ instruction is used when number of statements is to be repeated.
A) LD
B) LOOP
C) JMP
D) MOV
Answer: B
#75 How many op-codes do a zero-Address instruction has?
A) 1
B) 2
C) 3
D) 0
Answer: A
#76 which of the following is not arithmetic instruction?
A) DIV
B) MUL
C) SUB
D) JMP
Answer: D
#77 ________ changes alternating current (AC) to low-voltage direct current (DC) to operate the processor and peripheral devices.
A) Motherboard
B) Power supply
C) Output unit
D) Register
Answer: B
#78 which of the following is the firmware built into the computer system ?
A) Slot
B) RAM
C) Port
D) BIOS
Answer: D
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