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प्रश्न
Answer the following question :
Distinguish between digital and analogue signals.
उत्तर
| Digital Signals | Analogue Signals |
| 1. They are discontinuous functions of time or discrete time signals. | 1. They are continuous functions of time. |
| 2. They use discrete values to represent information. They are represented by square waves. | 2. They use a continuous range of values to represent information. They are represented by sine waves or other continuous graphs. |
APPEARS IN
संबंधित प्रश्न
Identify the logic gates marked 'P' and 'Q' in the given circuit. Write the truth table for the combination.
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)
Show that \[AB + \overline {AB }\] is always 1.
The amplification factor of a triode operating in the linear region depends strongly on ____________ .
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 |
With the help of a diagram, show how you can use several NAND gates to obtain an OR gate.
Useful Constants and Relations :
| 1. Speed of Light in Vacuum | (c) = 3.00 x 108 m/s |
| 2. Charge of a proton | (e) = 1.60 x 10-19C |
| 3. Planck's Constant | (h) = 6.6 x 10-34 Js |
| 4. Permeability of vacuum | (μ0) = 4π x 10-7 Hm-1 |
| 5. Electron Volt | (1eV ) = 1.6 x 10 |
| 6. Unified Atomic Mass Unit | (1u) = 931 MeV |
| (π) = 3.14 | |
| ( ln 2 ) = 0.693 |
You are given circuit as shown in the figure, which consists of NAND gate. Identify the logic operation carried out by the two. Write the truth table. Identify the gates equivalent to the tow circuits.
A CE amplifier has a voltage gain 50, an input impedance of 1000 ohm 1 and an output impedance of 200 ohm. The power gain of the amplifier will be
Which logic gate is similar to a function of two series switches?
Write the truth table for the circuit shown in figure. Name the gate that the circuit resembles.
