Electronics and Communication Engineering - Digital Electronics

26. 

The 8085 microprocessor is interrupted while executing MOV instruction at location 0210 H. What is the location at which contents of register E are stored.

A. 054 CH
B. 054 DH
C. 054 EH
D. 054 FH

Answer: Option C

Explanation:

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27. 

The amplifier used in bootstrap voltage sweep should have a gain of

A. +1
B. +∞
C. -1
D. -∞

Answer: Option C

Explanation:

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28. 

+12 V supply is given to plates a, d, g, and 0 V to other plates and grid of a VF display. The plates which will glow are

A. a, d, g
B. b, c, e, f
C. all
D. none

Answer: Option C

Explanation:

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29. 

An interrupt in which the external device supplies its address as well as the interrupt is known as

A. vectored interrupt
B. maskable interrupt
C. polled interrupt
D. non-maskable interrupt

Answer: Option A

Explanation:

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30. 

What is the decimal equivalent of the binary number shown in fourth row?

A. 79
B. 97
C. 117
D. 127

Answer: Option B

Explanation:

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