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3.1. NAND Gate Truth Table
Digital Electronics Tutorials
Universal Logic Gates in Hindi
Universal Logic Gates
Universal Logic Gates ऐसे logic gates होते है जिनका use करके हम सभी type के logic gates बना सकते है ये दो type के होते है NOR Gate और NAND Gate
NOR Gate
जब हम एक OR और NOT gate को add करते है तो NOR gate बनाता है। NOR gate 2 input लेता है और output मे OR gate के output का opposite देता है।
NOR gate का Boolean expression (A + B)’ होता है, ये gate commutative law को तो fallow करता है but idempotent और associative law को fallow नहीं करता है।
Truth Table of NOR Gate
| INPUT | OUTPUT | |
|---|---|---|
| A | B | (A + B)' |
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 0 |
Some important output of NOR gate:
(a + a)’ = a’
(a + 0)’ = a’
(a + a’)’ = 0
(a + 1)’ = 0
NAND Gate
OR gate 2 input लेता है और अगर दोनों input false (0) हुआ तो output मे false देगा but कोई एक भी input true (1) हुआ तो output मे true return करेगा।
OR gate को “ + “ से represent करते है, इसका Boolean expression A + B होता है। ये idempotent law, associative law और commutative law को fallow करता है।
Truth Table of OR Gate
| INPUT | OUTPUT | |
|---|---|---|
| A | B | (A . B)' |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
Some important output of NAND gate:
(a . a)’ = a’
(a . 0)’ = 1
(a . a’)’ = 1
(a . 1)’ = a’
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