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| Q.68 | The logic 0 and logic 1 levels of TTL family defined in terms of input voltage levels are: | |
| Ans | 1. 0.9 to 1.2 V – logic 0 4 to 5 V – logic 1 | |
| 2. 0 to 0.5 V – logic 0 1 to 1.5 V – logic 1 | ||
| 3. 0 to 0.8 V – logic 0 2 to 5 V – logic 1 | ||
| 4. 1 V – logic 0 2 V – logic 1 |
Correct Ans Provided: 3
