Question

In RTL NOR gate, the output is at logic 1 only when all the inputs are at __________

(a) logic 0

(b) logic 1

(c) +10V

(d) Floating

I had been asked this question in an interview.

My doubt stems from Register-Transistor Logic(RTL) topic in chapter Logic Families of Digital Circuits

Answer 1

Right answer is (a) logic 0

The explanation: RTL NOR gate behaves as NOR gate and the output of NOR gate will be 1 only when all the inputs are at logic 0 and in rest conditions of the input, the output is 0.