Table of Contents
What is a NOR logic gate?
The NOR gate is a digital logic gate that implements logical NOR – it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0); if one or both input is HIGH (1), a LOW output (0) results. NOR is the result of the negation of the OR operator.
What logic gate is equivalent to a NOR gate?
A NOR gate is equivalent to an inverted-input AND gate. An OR gate is equivalent to an inverted-input NAND gate. Two NOT gates in series are same as a buffer because they cancel each other as A” = A.
What is the difference between a NOR gate and an OR gate?
The NOR gate is a combination OR gate followed by an inverter. Its output is “true” if both inputs are “false.” Otherwise, the output is “false.” The XNOR (exclusive-NOR) gate is a combination XOR gate followed by an inverter….Basic logic gates.
| Input 1 | Input 2 | Output |
|---|---|---|
| 1 | ||
| 1 | 1 | 1 |
Is NOR an inverter gate?
Inverting the output of a NOR gate (with another NOR gate connected as an inverter) results in the OR function. The NAND gate, on the other hand, requires inversion of all inputs to mimic the OR function, just as we needed to invert all inputs of a NOR gate to obtain the AND function.
Is NOR the same as and?
The NOR or “Not OR” gate is also a combination of two separate logic functions, Not and OR connected together to form a single logic function which is the same as the OR function except that the output is inverted.
Why NOR is known as universal gate?
Answer: The NAND & NOR gates are called universal gates because they perform all the logical operations of basis gates like AND, OR, NOT. Answer: NOR AS AND An AND gate gives a 1 output when both inputs are 1; a NOR gate gives a 1 output only when both inputs are 0.
What is the difference between logic gate and logic circuit?
Logic circuits are also called logic networks, are structures which are built up from certain elementary circuits called logic gates. Each logic circuit may be viewed as a machine L which contains one or more input devices and exactly one output device.
What are the advantages of NOR gate?
When using a NOR Gate, using an Invertor is no longer necessary in combination with an OR Gate. It will give the same outcome, however, the NOR Gate gives the advantage that it needs little space, less material and is less complicated. At least one input must be active to stop the output power.
What is a logic gate?
The logic gates are the building blocks of digital circuits. A logic gate has one output, but one or more inputs. The output signal appears only for certain combinations of input signals. There are three basic logic gates:
What is a NOR gate?
The NOR gate is a combination of OR and NOT gates. If the output of OR gate is connected to the input of NOT gate, as shown in Figure, the resulting gate is called the NOR gate. The NOR gate truth table can be illustrated by a simple circuit shown in Figure.
What is the difference between normally closed and NOT gate?
Normally closed (N.C.) contacts are logically equivalent to a NOT gate. A relay must be used to invert the output of a logic gate function, while simple normally-closed switch contacts are sufficient to represent inverted gate inputs.
How many inputs and outputs does a NOT gate have?
The not gate has only one input and the one output. It combines the input A with the output Y according to the Boolean expression: The logic symbol of the NOT gate is shown in Figure. The possible combinations of the input A and the output Y of the NOT gate can be illustrated with the help of the electric circuit shown in Figure.