Electronics and Communication Engineering - Microprocessors

1. 

Assertion (A): A PROM is a user programmable ROM.

Reason (R): After programming PROM behaves like ROM.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct R is wrong
D. A is wrong R is correct

Answer: Option B

Explanation:

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2. 

The operator precedence in Java is in the order

A. arithmetic operation, increment and decrement operation, comprassion, logical operation and assignment operation.
B. increment and decrement operation, arithmetic operation, comparison, logical operation and assignment operation.
C. comparison, arithmetic operation, increment and decrement operation, logical operation and assignment operation.
D. arithmetic operation, comparison operation, increment and decrement operation, logical operation and assignment operation.

Answer: Option B

Explanation:

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3. 

A colour monitor usign 16 bits at a resolution of 600 x 400 pixels needs a memory of

A. 240000 B
B. 9600 B
C. 6400 B
D. 480000 B

Answer: Option D

Explanation:

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4. 

Read the following statements as regards register pairs in microprocessor 8085

  1. B represents B, C pair with B as high order register and C as low order register.
  2. D represents D, E pair with D as high order register and E as low order register.
  3. H represents H, L pair with H as high order register and L as low order register.
Which of the above statements are correct?

A. All
B. 1 and 3
C. 1 and 2
D. 2 and 3 only

Answer: Option A

Explanation:

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5. 

The 8085 instruction 'PUSH PSW' belongs to the group

A. data transfer
B. arithmetic
C. logic
D. none of the above

Answer: Option D

Explanation:

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