an 2 input AND gate can be realize using 3 NOR gates.
Let ,A and B are the input and x be the output.
x=A.B= NOR(NOR(A) NOR(B))
A: There is no NOT gate NOT is a term used to signify that the function is negated like OR becomes NOT if the output is negated by an inversion of the final signal. The difference in gates OR and NOR are symbolic designated as a small circle on the output
IMPROVED: To get an Not gate from a NAND gate you start with the NOT gate then followed by the NAND gate to get an equivalent of NOT gate using these two gates.
To get a not gate (or inverter) from nor gate, tie the two input together. If fan-in is a concern, tie one input to logic false and drive the other input.
1. Explain NOR gate as Universal Gate A NOR gate is a simple OR gate with an inverter (NOT gate) at the output. NOR gates are considered Universal Gates because thay can be configured in a few different ways. Connecting the inputs on a NOR gate will result in a NOT gate (inverter). Connecting the above to the output of a NOR gate results in an OR gate.
This is made by joining the inputs of a NOR gate. As a NOR gate is equivalent to an OR gate leading to NOT gate, this automatically sees to the "OR" part of the NOR gate, eliminating it from consideration and leaving only the NOT part. Truth Table Input A Output Q 0 1 1 0
b'coz t mobility of electrons in NAND gate is 3 times higher than that of NOR gate
NOR gate is equivalent to bubbled AND gate. -Nidhi Singh
NOR gate is equivalent to bubbled AND gate. -Nidhi Singh
Use 4 NOR gates. For the 1st NOR gate, inputs should be x' and y For the 2nd NOR gate,inputs should be y' and x The outputs of NOR 1 and NOR 2 are taken as inputs of NOR gate 3 The output of NOR 3 is the complemented form of the output required, so, just complement the output of NOR gate 3 with another NOR gate and Viola!, you have your HALF ADDER OUTPUT PS:I have used a double rail logic, where both x:x' and y:y' are available
Yes._____A----|_____NOR------QThis is an inverter. A NOR gate is an OR gate with an inverter on the end, so adding the above configuration after another NOR gate would give you an OR gate.__A----|__NOR---\__ NOR------QB----|__NOR---/This is an AND gate. By adding the inverter, you can get a NAND gate.A____|___|__NOR----------------\| | \| |___ NOR----QB __| |___NOR-----\ /|_____ NOR --/|_____NOR-----/By combining an AND gate, an OR gate, and a NAND gate, and canceling out a couple of inverters, you get this operator, which is a XOR gate.The formatting here is messed up, but if you go to the "improve answer" link, you can see the circuits.
nor to and
A 2 input NAND gate requires 4 NOR gates.A 3 input NAND gate requires 5 NOR gates.A 4 input NAND gate requires 6 NOR gates.etc.
In grammar, it is a negative "or", as in "It is neither fish nor fowl" In logic circuitry, it is a "not or" gate, which is the inverse of an "or" gate
A nor gate provides an output of 0 when any input is 1.Nor gate provides the opposite of or gate. An or gate provides a 1 or true output when any of the inputs is 1 or true. Therefore the opposite output would be provided by a nor gate.
The nand gate is prefered over the nor gate because for a nand gate, all other states are true except the 1 1 state which is false while for a nor gate all other states are false except the 0 0 state which is true.