Question
The output of an OR gate is connected to both the inputs of a NAND gate. Draw the logic circuit of this combination of gates and write its truth table.
Solution
The output of an OR gate is connected to both the inputs of a NAND gate.
Logic circuit:

Truth table:
Logic circuit:

Truth table:
A |
B |
Y’ = A + B |
|
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |