Advertisements
Advertisements
प्रश्न
Write the truth table for the circuits given in following figure consisting of NOR gates only. Identify the logic operations (OR, AND, NOT) performed by the two circuits.
(a)
(b)
Advertisements
उत्तर
(a) A acts as the two inputs of the NOR gate and Y is the output, as shown in the following figure. Hence, the output of the circuit is `bar(A+A)`.
The truth table for the same is given as:
| A | Y`(=bar"A")` |
| 0 | 1 |
| 1 | 0 |
This is the truth table of a NOT gate. Hence, this circuit functions as a NOT gate.
(b) A and B are the inputs and Y is the output of the given circuit. By using the result obtained in solution (a), we can infer that the outputs of the first two NOR gates are `barA` and `barB` as shown in the following figure.
`bar"A" and bar "B"` are the inputs for the last NOR gate. Hence, the output for the circuit can be written as:
`"Y" = bar(bar"A" + bar"B") = bar(bar"A") . bar(bar"B") = "A.B"`
The truth table for the same can be written as:
| A | B | Y (=A⋅B) |
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
This is the truth table of an AND gate. Hence, this circuit functions as an AND gate.
संबंधित प्रश्न
Identify the logic gates marked 'P' and 'Q' in the given circuit. Write the truth table for the combination.
The logic gate which produces LOW output when one of the input is HIGH and produces
HIGH output only when all of its inputs are LOW is called _______.
(A) AND gate
(B) OR gate
(C) NOR gate
(D) NAND gate
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)
Write the truth table for a NAND gate connected as given in the following figure.
Hence identify the exact logic operation carried out by this circuit
The arrangement given below represents a logic gate :
Copy the following truth table in your answer booklet and complete it showing outputs at C
and D.
| A | B | C | D |
| 0 | 0 | ||
| 1 | 0 | ||
| 0 | 1 | ||
| 1 | 0 |
Name the logic gate which generated high output when at least one input is high.
The amplification factor of a triode operating in the linear region depends strongly on ____________ .
The outputs of two NOT gates are fed to a NOR gate. Draw the logic circuit of the combination of gates. Write its truth table. Identify the gate equivalent to this circuit.
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.
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.
A radar is sending out pules of 1 micro second duration at interval of 100 micro-second. The range of the radar is
The Boolean expression for NAND gate is
An oscillator is nothing but an amplifier with
Draw the output signals C1 and C2 in the given combination of gates (Figure).
An X-OR gate has following truth table:
| A | B | Y |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
It is represented by following logic relation `Y = barA.B + A.barB`. Build this gate using AND, OR and NOT gates.
A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below.
The logic gate circuit is ______.
Which of the following gives a reversible operation?
Which one of the following is the Boolean expression for NOR gate?
The output (Y) of the given logic implementation is similar to the output of an/a ______ gate.
