Exercise: Digital Electronics

Questions for: Digital Electronics

The number of counter states which an 8 bit stair step A/D converter has to pass through before conversion takes place is equal to
A:
1
B:
8
C:
255
D:
256
Answer: D

28 = 256.

📖
📝
💬
👁️
A 4 bit down counter starts counting from 1111 irrespective of modulus.
A:
True
B:
False
C:
D:
Answer: B

The starting count depends on modulus. 4 bit decade down counter starts counting from 1010.

📖
📝
💬
👁️
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: B

Only 2 segments are lit as seen in

📖
📝
💬
👁️
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: A

.

📖
📝
💬
👁️
The no. of comparators required in a 3 bit comparator type ADC is
A:
2
B:
3
C:
7
D:
8
Answer: C

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

📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz