Basic Of Digital Electronic
9 Questions
| Attempts: 95
Basic concept of DE
Questions and Answers
- 1............. are Universal gates.
- A.
NAND & NOR
- B.
EX-OR
- C.
NOT gate
- D.
None of above
- 2.When the output of NAND gate is LOW
- A.
When both input are same
- B.
When one is high and other is low
- C.
When both input are 1
- D.
When both input are 0
- 3.What will the next number of this series, when the base is octal 656, 657, .....
- A.
658
- B.
670
- C.
660
- D.
700
- 4.Which Universal gate is sufficient to implement, when function is in POS form
- A.
OR gate
- B.
NAND gate
- C.
EX-NOR gate
- D.
NOR gate
- 5.A parity bit is an extra bit that is attached with a message to make total number of......... either even or odd.
- A.
0
- B.
1
- C.
Both 0 & 1
- D.
None of above
- 6.Which one is non-weighted code
- A.
84-2-1
- B.
BCD
- C.
Excess-3
- D.
2421
- 7.To design a BCD adder which number would you add if the sum is incorrect
- A.
0110(6)
- B.
0101(5)
- C.
1000(8)
- D.
1001(9)
- 8.This device always gives single output.
- A.
Encoder
- B.
Multiplexer
- C.
De-Multiplexer
- D.
Code converter
- 9.A 1024x6 ROM has....... input
- A.
6
- B.
1024
- C.
5
- D.
10
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