Textbook brain teaser
Show that the printed circuit with a NOR gate followed by NOT acts as OR.
ثابت کریں کہ مطبوعہ سرکٹ میں NOR کے بعد NOT لگانے سے OR بنتا ہے۔
Solution & explanation
| A | B | Y = NOR(A,B) | X = NOT Y |
|---|---|---|---|
| 0 | 0 | 1 | 0 |
| 0 | 1 | 0 | 1 |
| 1 | 0 | 0 | 1 |
| 1 | 1 | 0 | 1 |
Let Y = NOT(A OR B). The final inverter gives X = NOT Y = NOT NOT(A OR B) = A OR B. For inputs 00, 01, 10, 11, outputs are 0, 1, 1, 1. Two inversions cancel; redraw the gates rather than copying a page image.
Independent study material · English-medium textbook p. 162 · Original book ↗