Electronics and Communication Engineering - Digital Electronics

26. 

Equipment using BCD numbers

A. pocket calculators
B. electronic counter
C. digital voltmeters
D. all of the above

Answer: Option D

Explanation:

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27. 

If number of bits is N, the % resolution in analog to digital conversion is

A.
B.
C.
D.

Answer: Option C

Explanation:

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28. 

In a microprocessor system the stack is used for

A. starting the program return address whenever a subroutine jump instruction is execute
B. transmitting and receiving input and output data
C. starting all important CPU register contents whenever an interrupt is to be serviced
D. storing program instructions for interrupt service routine

Answer: Option A

Explanation:

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29. 

In N channel MOSFET with gate reverse biased, the gate current is of the order

A. 10-3 amp
B. 10-6 amp
C. 10-9 amp
D. 10-12 amp

Answer: Option D

Explanation:

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30. 

In 8085 microprocessor, a RIM instruction is used to

A. disable the interrupts 7.5, 6.5, 5.5
B. enable the interrupts 7.5, 6.5, 5.5
C. read in the serial input data
D. none of the above

Answer: Option C

Explanation:

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