## What is the Boolean expression for OR gate?

Y = A + B
The Boolean expression of OR gate is Y = A + B, read as Y equals A ‘OR’ B.

## How do you find the combination of a gate?

Combination gates are created in the following way: After inserting a Gate View object onto the layout (Insert→General→Gate View), right-click on the Gate View and select Add Combination Gate from the pop-up menu. A dialog box (Figure 9.23) will appear.

How many gates are in a Boolean expression?

2-input NOR (Not OR) Gate As well as the standard logic gates there are also two special types of logic gate function called an Exclusive-OR Gate and an Exclusive-NOR Gate.

### How do you convert logic gates to Boolean expressions?

To convert a ladder logic circuit to a Boolean expression, label each rung with a Boolean sub-expression corresponding to the contacts’ input signals, until a final expression is reached at the last coil or light.

### What is the Boolean expression for a three AND gate?

C = D is the expression for three input AND gate.

What is the Boolean equation of XOR gate?

An XOR gate is also called exclusive OR gate or EXOR. In a two-input XOR gate, the output is high or true when two inputs are different. In Boolean expression, the term XOR is represented by the symbol (⊕) and the Boolean expression is represented as Y = A ⊕ B.

#### What is the combination of OR gate and NOT gate?

NAND gate
The combination of an AND gate and a NOT gate is called a NAND gate, as shown in the diagram.

What is the Boolean expression for a 3 input AND gate?

## What is the Boolean expression for a three input AND gate?

B. C = D is the expression for three input AND gate.

## What is Boolean expression for OR gate and NAND gate?

The Boolean expression given for a NAND gate is that of logical addition and it is opposite to AND gate. The Boolean expression is given by a single dot (.) with an overline over the expression to show the NOT or the logical negation of the NAND gate.

How many combinations are there for a four input gate?

So, a 4-input AND gate has 16 possible combinations, 5 inputs would be 32 outputs, and so on.

### What is Boolean expression of XNOR gate?

XNOR: the Boolean expression for the XNOR gate is: $$Y = A \cdot B + \bar A\bar B$$.

### What is the Boolean expression for a three input AND gate Mcq?

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

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

What is the Boolean expression for a NOT gate?

Boolean expression of NOT gate is X=Aˉ

#### How many and gates are required to implement the Boolean expression?

Any Boolean function can be implemented using only AND and INVERT gates since the OR function can be generated by a combination of these two gates, as shown in Figure 2.20(a). It follows that these two gates can implement any arbitrary Boolean function and they are said to form a complete set.

#### Which is following is the Boolean expression for a 3 input NAND gate?

3 input NAND Gate Unlike the two-input NAND gate, the three-input NAND gate has three inputs. The symbolic representation of the three input NAND gate is as follows. The Boolean expression of the logic NAND gate is represented as the binary operation dot(.). Where A, B, and C are the inputs and Y is the output.

What is the Boolean expression for 3 input AND gate?

## How many input combinations has the six input AND gate?

n= number of varriable . For example : 6 input variable. 2^6=64.

## What is combinational logic gates?

Combinational Logic Circuits are made up from basic logic NAND, NOR or NOT gates that are “combined” or connected together to produce more complicated switching circuits. These logic gates are the building blocks of combinational logic circuits.

How do you write the Boolean expression for XOR gate?

OR Gate.

• AND Gate.
• NOT Gate.
• NAND Gate.
• NOR Gate.
• Exclusive-OR gate (XOR Gate) In XOR gate the output of a two-input XOR gate attains the state 1 if one adds only input attains the state 1.
• Exclusive-NOR Gate (XNOR Gate) In XNOR gate the output is in state 1 when its both inputs are the same that is,both 0 or both 1.
• ### How to simplify Boolean function into two logic gates?

Simplification of Boolean functions Using the theorems of Boolean Algebra, the algebraic forms of functions can often be simplified, which leads to simpler (and cheaper) implementations. Example 1 F = A.B + A.B + B.C = A. (B + B) + B.C How many gates do you save = A.1 + B.C from this simplification? = A + B.C A A B F B F C C

### How to simplify the following Boolean expressions?

Problem 1

• Solution. So,F ( A,B,C) = B+A C ′ is the minimized form.
• Problem 2
• Solution. Or,F ( A,B,C) = A. A+A. C+B. Or,F ( A,B,C) = A+A. C+B.
• What is an example of a Boolean expression?

boolean expression (named for mathematician George Boole) is an expression that evaluates to either true or false. Let’s look at some common language examples: • My favorite color is pink. → true • I am afraid of computer programming. → false • This book is a hilarious read. → false