Question

Which of the following is the most widely employed logic family?

(a) Emitter-coupled logic

(b) Transistor-transistor logic

(c) CMOS logic family

(d) NMOS logic

This question was posed to me at a job interview.

This interesting question is from Logic Families topic in chapter Digital Circuits of Analytical Instrumentation

Answer 1

Correct choice is (b) Transistor-transistor logic

To explain: Transistor-transistor logic is the most widely employed logic family. It is the most popular logic family.