Electronics and Communication Engineering - Digital Electronics

6. 

In 8085 microprocessor, an interrupt service request is serviced

A. immediately on receipt of request
B. after the execution of the current instruction is completed
C. at the end of the current machine cycle
D. none

Answer: Option B

Explanation:

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7. 

Which interrupts are masked?

A. 5.5
B. 6.5
C. 7.5
D. None

Answer: Option B

Explanation:

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8. 

A clock pulse is fed into 3 bit binary down count. The signal at B output is

A.
B.
C.
D. none of these

Answer: Option A

Explanation:

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9. 

Assertion (A): A high density IC has more diodes, transistors and resistors per unit surface area.

Reason (R): A high density IC can handle high voltages.

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 true, R is false
D. A is false, R is true

Answer: Option C

Explanation:

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10. 

CMOS is extensively used in

A. pocket calculators
B. digital wrist watches
C. satellites
D. all of the above

Answer: Option D

Explanation:

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