## Literal:

A **literal **is a variable or its negation.

**Here are some examples of literals in digital logic:**

- A variable: A, B, C, D
- The complement of a variable: A’, B’, C’, D’

## Minterm:

The product of all literals, either with complement or without complement, is known as **minterm**.

• In this term, **0 **is represented in complemented form.

• It is denoted by ‘**m**‘/ **ƒ=∑m**.

## Maxterm:

The sum of all literals, either with complement or without complement, is known as **maxterm**.

• In this term, **1 **is represented in complemented form.

• It is denoted by ‘**M**‘ / **ƒ=πM**.

**Maxterm from values**Using the given variable values, we can write the maxterm as:

• If the variable value is 0, then we will take the variable without a complement.

• If the variable value is 1, take the complement of the variable.

```
Domain of Boolean expression:
The domain of boolean expression is the set of variables contained in the expression in either complemented or uncomplemented form.
for example:
The domain of the boolean expression, A'B+AB'C is the set of variables A,B,C
```