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Question
Identify the logic gates marked 'P' and 'Q' in the given circuit. Write the truth table for the combination.
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Solution
P - NAND GATE
Q - OR GATE
Assume:
`X'=bar(A.B)`
| A | B |
`X'=bar(A.B)` |
X |
| 0 | 0 | 1 | 1 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | 1 |
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