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प्रश्न
Identify the logic gates marked 'P' and 'Q' in the given circuit. Write the truth table for the combination.

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उत्तर
P - NAND GATE
Q - OR GATE
Assume:
`X'=bar(A.B)`
| A | B |
`X'=bar(A.B)` |
X |
| 0 | 0 | 1 | 1 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | 1 |
APPEARS IN
संबंधित प्रश्न
You are given the two circuits as shown in following figure. Show that circuit
- acts as OR gate while the circuit
- acts as AND gate.
(a)

(b)

Name the logic gate which generated high output when at least one input is high.
Why is the linear portion of the triode characteristic chosen to operate the triode as an amplifier?
Draw a diagram to show how NAND gates can be combined to obtain an OR gate. (Truth table is not, required)
Useful Constants and Relations:
| 1. | Charge of a proton | (e) | =1.6 × 10-19C |
| 2. | Planck's constant | (h) | = 6·6 × 10-34 Js |
| 3. | Mass of an electron | (m) | = 9·1× 10-31 kg |
| 4. | Permittivity of vacuum | (∈0) | =8 · 85 × 10-12 Fm-1 |
| 5. | `(1/(4pi∈_0))` | =9 ×109 mF-1 | |
| 6. | Permeability of vacuum | (μ0) | = 4π × 10-7 Hm-1 |
| 7. | `((mu_0)/(4pi))` | =1 × 10-7 Hm-1 | |
| 8. | Speed of light in vacuum | (c) | = 3× 108 ms-1 |
| 9. | Unified atomic mass unit | (u) |
= 931 MeV |
| 10. | Electron volt | (leV) | = 1.6 × 10-19 J |
You are given a circuit as shown in the figure, which consists of the NAND gate. Identify the logic operation carried out by the two. Write the truth table. Identify the gates equivalent to the tow circuit.

NAND and NOR gates are called universal gates primarily because they ______.
The current obtained from a simple filterless rectifier is
An oscillator is nothing but an amplifier with
Truth table for the given circuit (Figure) is ______.

Write the truth table for the circuit shown in figure. Name the gate that the circuit resembles.

