Digital Teaching Aid: Introduction Boolean Algebra - Lesson 2: Lesson Plan: Boolean equations of logic circuits

Digital Teaching Aid

Introduction Boolean Algebra - Lesson 2

Lesson Plan

		Introduction
		Boolean algebra
		Boolean equations of logic circuits
		NOR and NAN gates
		De Morgan's theorems

You can use Boolean algebra as a shorthand notation for digital circuits.

Ex:

Fig. 2-4: Digital circuit

Output of the first gate:

X3 = A + B

Output of the second gate:

X6 = X3 + C = A + B + C

The final output is:

X8 = X6 + D = A + B + C + D = X

HO: Find the Boolean equation for the following circuit.

Fig. 2-5: Logic circuit

Solution:

X = (A + B) (C + D)