Question
Download Solution PDFFollowing gates section is connected in a complete suitable circuit.
For which of the following combination, bulb will glow (ON):
Answer (Detailed Solution Below)
Option 2 : A = 1, B = 0, C = 0, D = 0
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Detailed Solution
Download Solution PDFExplanation:
Bulb will glow if the bulb have potential drop on it.
One end of bulb must be at high (1) and other must be at low (0).
For gate input A, B and C
⇒A' + A' = A + B.C = (A' + B' + C')' .........(De morgan's law)
⇒A .B.C .........(Idempotent law)
For D = D'
| A | B | C | D | D' | Glow |
| 0 | 1 | 1 | 1 | 0 | NO |
| 1 | 0 | 0 | 0 | 1 | YES |
| 0 | 0 | 0 | 1 | 0 | NO |
| 1 | 1 | 1 | 0 | 1 | NO |
Option (2) satisfy this condition