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Question
Why are NOR gates considered as universal gates?
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Solution 1
Because they can be used to make any gates
Solution 2
NOR gates are called universal gates because all the other gates like and, OR, NOT, XOR and XNOR can be derived from it.
These gates have the simplest circuit and all other "gates" can be obtained by an arrangement of NOR gates in an electrical circuit.
RELATED QUESTIONS
Write the truth table for the combination of the gates shown. Name the gates used.
Write the truth table for circuit given in figure below consisting of NOR gates and identify the logic operation (OR, AND, NOT) which this circuit is performing.
(Hint: A = 0, B = 1 then A and B inputs of second NOR gate will be 0 and hence Y=1. Similarly work out the values of Y for other combinations of A and B. Compare with the truth table of OR, AND, NOT gates and find the correct one.)
Draw the schematic symbols for AND, OR, NOT and NAND gate
Design a logical circuit using AND, OR and NOT gates to evaluate \[A \overline { BC } + B \overline{ CA }\] .
Why is the linear portion of the triode characteristic chosen to operate the triode as an amplifier?
Draw the truth table of a NOR gate.
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 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.
The truth table for the following logic circuit is:
Identify the logic operation carried out by the given circuit:
