Electronics and Communication Engineering - Digital Electronics

6. 

The circuit of the given figure is

A. full adder
B. full subtractor
C. shift register
D. decade counter

Answer: Option B

Explanation:


7. 

A half adder adds

A. 2 bits
B. 3 bits
C. 4 bits
D. 2 or 3 bits

Answer: Option A

Explanation:


8. 

The no. of comparators required in a 3 bit comparator type ADC is

A. 2
B. 3
C. 7
D. 8

Answer: Option C

Explanation:

Number of comparators = 2n - 1 = 23 - 1 = 7.


9. 

If the ladder reference voltage is 2 V, then minimum comparator resolution required is

A. 0.125 V
B. 1.25 V
C. 12.5 V
D. 0

Answer: Option A

Explanation:

.


10. 

In a 7 segment LED display, the minimum number of segments is activated when the input decimal number is

A. 0
B. 1
C. 2
D. 3

Answer: Option B

Explanation:

Only 2 segments are lit as seen in