What are logic gates? Describe NAND and OR operation using truth tables and circuit symbols.
منطقی گیٹ کیا ہیں؟ NAND اور OR کا عمل صداقتی جدولوں اور سرکٹ کی علامتوں سے بیان کریں۔
Solution & explanation
| A | B | NAND = NOT(A AND B) | OR = A OR B |
|---|---|---|---|
| 0 | 0 | 1 | 0 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | 1 |
For A,B = 00,01,10,11: NAND outputs 1,1,1,0; OR outputs 0,1,1,1. NAND is an AND-shaped gate with an inversion bubble at output. OR has a curved input side and pointed output. The bubble means logical inversion, not a separate input.
Independent study answer. Original textbook ↗ · English-medium printed page 165.