Computer Organization & Architecture (3140707) MCQs

MCQs of Basic Computer Organization and Design

Showing 11 to 20 out of 50 Questions
1 2 3 4 5
11.
Bit "E" stands for what?
(a) Extra bit
(b) Extra AC
(c) Extended AC
(d) Enable
Answer:

Option (c)

12.
Which opcode is not valid in MRI?
(a) 111
(b) 010
(c) 101
(d) 000
Answer:

Option (a)

13.
Which instruction of the following is not included in register reference?
(a) CLA
(b) ADD
(c) INC
(d) HLT
Answer:

Option (b)

14.
Which instruction format has "7" at MSB in hexadecimal representation of opcode?
(a) Memory
(b) Input-output
(c) Register
(d) None
Answer:

Option (c)

15.
Every Input-output instruction has hexadecimal number at MSB is?
(a) 7
(b) 8
(c) E
(d) F
Answer:

Option (d)

16.
Which of the following instruction has "0" in bit-15 of instruction format?
(a) INC
(b) INP
(c) SKI
(d) ION
Answer:

Option (a)

17.
The outputs of SC are decoded into 16 timing signals T0 through T15 in control unit. Here SC stands for?
(a) Start Clock
(b) Sequence Counter
(c) Signal Counter
(d) Set Counter
Answer:

Option (b)

18.
Which type of decoder is used to decode operation code of instruction register in control unit?
(a) 2 x 4
(b) 4 x 16
(c) 5 x 32
(d) 3 x 8
Answer:

Option (d)

19.
Which memory is programmed to initiate the required sequence of microoperation in microprogrammed control?
(a) RAM
(b) Cache Memory
(c) Control Memory
(d) Virtual Memory
Answer:

Option (c)

20.
Which signal should be enabled after complete the execution of every instruction?
(a) CLR SC
(b) CLA
(c) CLR E
(d) CLC
Answer:

Option (a)

Showing 11 to 20 out of 50 Questions
1 2 3 4 5