Electronics and Communication Engineering:: Microprocessors

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

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.

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

Read the following statements as regards register pairs in microprocessor 8085 B represents B, C pair with B as high order register and C as low order register. D represents D, E pair with D as high order register and E as low order register. 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

The instruction MOV M, r in 8085

A. causes content of register r to be moved to memory location whose address is in register H, L and uses register indirect addressing mode
B. causes the content of memory location whose address is in register H, L to move to register r and uses register indirect addressing mode
C causes the content of register r to be moved to memory location whose address is in register H, L and uses immediate addressing mode
D. causes the content of memory location whose address is in register H, L to move to register r and uses immediate addressing mode

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