Which of the following register is not used in opcode fetch operations?

A)
Flag register
B)
Program counter
C)
Memory data register
D)
Memory address register

Correct Answer : Option (A) :   Flag register

Explanation : Flag register is not used in opcode fetch operations. It is used to represent the status of ALU operation which is performed after decoding of the opcode.

Recently Updated in Microprocessors Questions
If I = J = K = 13, then in Fortran 1 = 10 - (1 / 10) * 10 + (J / 5) * 4 + K ** (- 2) is equal to
A)
5
B)
6
C)
7
D)
8

Correct Answer :   8

In the dimension statement DIMENSION A (50, 50), K (100, 100) the total number of locations reserved will be
A)
2500
B)
100000
C)
125000
D)
250000

Correct Answer :   125000

In super computers the extra level of primary memory is generally called
A)
Single stage device
B)
Digital state device
C)
Solid state device
D)
Surface stage device

Correct Answer :   Solid state device

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