Question

What are the pros and cons of using universal gates for the design of logic circuits (such as NAND)

Answer 1

Pros

1) One of the advantages of using universal gates for the design of logic circuits is that we can implement any function using universal gates.

2) We can easily implement a CMOS version of a circuit if it is implemented by using universal gates compared to the circuit which was implemented by using normal logic gates.

3) Universal gates are easy to fabricate on IC's and are very economical.

Cons

1) The main disadvantage of using universal gates for the design of logic circuits is there will be an increase in the required number of gates to implement normal logic gates like Ex-or, Or etc. For suppose if we have to implement AND gate using NAND gate, we will require 2 NAND gates.

2)  There is a difficulty in logic design using universal gates as compared to basic logic gates difficulty.

3) It would be very difficult to debug if an error is present because all components are of the same functionality.

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