Computer Organization & Architecture (3140707) MCQs

MCQs of Basic Computer Organization and Design

Showing 1 to 10 out of 50 Questions
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1.
How many bits are required in operation code of an instruction to perform 30 distinct operations?
(a) 15
(b) 5
(c) 30
(d) 6
Answer:

Option (b)

2.
Effective address is?
(a) Operand in computation type
(b) Target address in branch type
(c) Both A & B
(d) None
Answer:

Option (c)

3.
Which register is used to hold address of next instruction?
(a) IR
(b) DR
(c) AR
(d) PC
Answer:

Option (d)

4.
Which register does not have 16 number of bits?
(a) PC
(b) IR
(c) TR
(d) DR
Answer:

Option (a)

5.
Which register has only 8 number of bits?
(a) TR
(b) DR
(c) INPR
(d) AR
Answer:

Option (c)

6.
Which register is also called as processor register?
(a) PC
(b) AC
(c) TR
(d) AR
Answer:

Option (b)

7.
In common bus system, value of DR is placed on bus lines when S2 S1 S0 =?
(a) 000
(b) 001
(c) 010
(d) 011
Answer:

Option (d)

8.
Which pin should be enabled to receive data from bus line to particular register in common bus system?
(a) ST
(b) LD
(c) RC
(d) Read
Answer:

Option (b)

9.
When AR or PC are applied to the 16-bit common bus, the four MSBs are set to?
(a) 0
(b) 1
(c) X
(d) Not required
Answer:

Option (a)

10.
AC register can take data from?
(a) PC
(b) AR
(c) IR
(d) AC
Answer:

Option (d)

Showing 1 to 10 out of 50 Questions
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