Question

TTL is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by ____________

(a) Resistors

(b) Bipolar junction transistors

(c) One transistor

(d) Resistors and transistors respectively

I have been asked this question in semester exam.

This intriguing question comes from Transistor Transistor Logic(TTL) in division Logic Families of Digital Circuits

Answer 1

Right option is (b) Bipolar junction transistors

Explanation: TTL is called transistor–transistor logic because both the logic gating function and the amplifying function are performed by bipolar junction transistors (BJTs).