Modern Physics 6 Question 6
6. The logic gate equivalent to the given logic circuit is
(Main 2019, 9 April II)
(a) NOR
(b) NAND
(c) OR
(d) AND
Show Answer
Solution:
- Truth table for given combination of logic gates is
| 0 | 0 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 | 1 |
| 0 | 1 | 1 | 0 | 1 |
| 1 | 1 | 0 | 0 | 1 |
Output
Alternate Solution
The given logic gate circuit can be drawn as shown below
Here,
Using de-Morgan’s theorem, i.e.
This represents the boolean expression for OR gate.
