Electronics and Communication Engineering - Digital Electronics

21. 

A 4 bit binary adder has 4 full adders.

A. True
B. False

Answer: Option B

Explanation:

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22. 

In floating point representation, the accuracy is

A. 10 bit
B. 9 bit
C. 8 bit
D. 6 bit

Answer: Option B

Explanation:

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23. 

The logic circuit in the given figure realizes the function

A. (A + B + C) (D E)
B. (A + B + C) (D E)
C. (A + B + C) (D E)
D. (A + B + C) (D E)

Answer: Option D

Explanation:

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24. 

The PC contains 0450 H and SP contains 08D 6 H. What will be content of P and SP following a CALL to subroutine at location 02 AFH?

A. 0453 H, 08 D 8 H
B. 0453 H, 08 D 4 H
C. 02 AFH, 08 D 8 H
D. 02 AFH, 08 D 4 H

Answer: Option D

Explanation:

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25. 

An n bit ADC using Vr as reference has a resolution (in volts) of

A.
B. Vr(n)
C.
D. 2Vr(n)

Answer: Option C

Explanation:

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