Electrical Engineering XYZ MCQs
Truth table is used to express:
- Boolean matrix
- Boolean expression
- Boolean addition
- Boolean map
Correct answer: 2. Boolean expression
Explanation:
A truth table is used to express the output of a Boolean function for all possible combinations of input values. It provides a systematic way of listing all possible combinations of input values and their corresponding output values. Each row in the truth table represents a unique combination of input values, and the corresponding column represents the output for that combination.
In the context of Boolean logic and digital circuits, a Boolean expression is a mathematical expression formed by combining Boolean variables using logical operators (AND, OR, NOT). The truth table helps in illustrating how the output of the Boolean expression changes with different input combinations.
The other options are not accurate descriptions of the purpose of a truth table:
- A Boolean matrix is a representation of Boolean values in matrix form but is not specifically used to express the output of a Boolean function.
- Boolean addition is not a standard term; Boolean operations involve logical operations such as AND, OR, and NOT, but not addition in the traditional sense.
- A Boolean map is not a standard term related to truth tables. Boolean maps are not commonly used in the context of expressing the output of Boolean functions.