Menu Close

What is the logical expression for ex-NOR gate?

What is the logical expression for ex-NOR gate?

2-input EX-NOR (Exclusive NOR) Gate For a 2-input Ex-NOR gate, the output Q is true if BOTH input A and input B are the same, either true or false, giving the Boolean Expression of: ( Q = (A and B) or (NOT A and NOT B) ).

Can NOR gate have 3 inputs?

As with the OR function, the NOR function can also have any number of individual inputs and commercial available NOR Gate IC’s are available in standard 2, 3, or 4 input types. If additional inputs are required, then the standard NOR gates can be cascaded together to provide more inputs for example.

What is the equation of a three input OR gate?

y = a’bc’ + ab’c’ + ab’c The combinational circuit constructed from these two equations is shown in (a) of Figure 1.4(f). . Each 3-variable AND term is replaced by a 3-input AND gate.

What is a 3 input NOR gate?

General Description. This device contains three independent gates each of which performs the logic NOR function. Ordering Code: Devices also available in Tape and Reel.

What is difference between ex or and ex-NOR gate?

In the XOR gate operation, the output is only 1 when only one input is 1. The output is logical 0 when both inputs are the same, meaning they are either 1 or 0. But in the XNOR gate, the inverse is true.

What is the use of EX OR gate?

It is used in simple digital addition circuits which calculate the sum and carry of two (half-adder) or three (full-adder) bit numbers. XOR gates are also used to determine the parity of a binary number, i.e., if the total number of 1’s in the number is odd or even.

How many NOR gates are required for AND gate?

AND: You need three NOR gates to create an AND gate. The first two are configured as NOT gates, so they invert the inputs. Then the third NOR gate produces a HIGH output if both of the original inputs are HIGH. NAND: It takes four NOR gates to create a NAND gate.

What is the symbol of NOR gate?

The ANSI symbol for the NOR gate is a standard OR gate with an inversion bubble connected. The bubble indicates that the function of the or gate has been inverted.

What is Boolean for 3-input AND gate?

The Boolean expression for a 3-input OR gate is ________. 63….Exercise :: Logic Gates – General Questions.

A. A = 1, B = 1, C = 1
B. A = 1, B = 0, C = 0
C. A = 0, B = 0, C = 1
D. A = 0, B = 0, C = 0

What is the equation of AND gate?

The logic or Boolean expression given for a digital logic AND gate is that for Logical Multiplication which is denoted by a single dot or full stop symbol, ( . ) giving us the Boolean expression of: A.B = Q.

How does a NOR gate work?

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 is the use of EX-OR gate?

What is the Ex nor function in logic?

The Ex-NOR function is a combination of different basic logic gates Ex-OR and a NOT gate, and by using the 2-input truth table above, we can expand the Ex-NOR function to: which means we can realise this new expression using the following individual gates.

When is the output of ex-NOR gate 1?

The output of EX-NOR gate is 1 when both the inputs are 1 (high) and if both the inputs are 0 (low). If either one of the input is 1 (high) the output will be 0 (low). In other words, both the inputs should be in the same logic level for the output to be 1.

Which is the logic symbol of the Exclusive-NOR gate?

In other words, both the inputs should be in the same logic level for the output to be 1. The logic symbol of an Exclusive-NOR gate is an XOR gate (Exclusive-OR gate) with the “inversion bubble” or the circle in front. Therefore, the Exclusive-NOR gate is the complementary form of the Exclusive-OR gate.

Is the Boolean function the same for the 3-input XNOR gate?

The Boolean function is same for the 3- input XNOR gate is 3-Input Ex-NOR gate logic symbol Truth table For Exclusive NOR gates, we can have the HIGH input when even numbers of inputs are at HIGH level. So the 3-input XNOR gate is called as “Even functioned OR gate”.The truth table and logic symbol for 3-input XNOR gate is given below.