Electronics and Communication Engineering - Digital Electronics

1.

A multilevel decoder is more costly as compared to single level decoder.

A.	True
B.	False

Answer: Option A

Explanation:

A multi level decoder may be cheaper than single level decoder.

2.

EPROM can be

A.	UVPROM
B.	EEPROM
C.	both UVPROM and EEPROM
D.	none of the above

Answer: Option C

Explanation:

Both ultra violet and electric pulses are used for erasing.

3.

A full subtractor has a total of

A.	2 inputs
B.	3 inputs
C.	4 inputs
D.	5 inputs

Answer: Option B

Explanation:

4.

The function of interface circuit is

A.	to match output conditions of driver with input conditions of load device
B.	to match output conditions of load device with input conditions of driver
C.	both (a) and (b)
D.	neither (a) nor (b)

Answer: Option A

Explanation:

Output of driver stage has to be matched with input of load.

5.

1274₁₆ - 3A7₁₆ = __________ .

A.	ACA₁₆
B.	ACB₁₆
C.	ECD₁₆
D.	AAA₁₆

Answer: Option C

Explanation:

Convert to decimal, subtract and change the result to hexadecimal.

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