Switching Theory and Logic Design

5

Threshold Logic and Symmetric Functions

LEARNING OBJECTIVES

After studying this chapter, you will know about:

1. Logic of threshold gate and its impact on researchers.
2. Incredible power of the T-gate in realising different functions in contrast with conventional logic gates.
3. Usefulness of the concept of threshold gate in other areas like neural networks.
4. Limitations with regard to sensitivity to parameter variations and difficulty in achieving solid state versions in IC chip form.
5. Symmetric functions and their identification.

5.1 INTRODUCTORY CONCEPTS

The earlier chapters covered the techniques of designing various logic circuits using AND, OR, NOT gates. We also discussed implementation using the universal operators/universal gates such ...