Question

Fan-in is defined as __________

(a) the number of outputs connected to gate without any degradation in the voltage levels

(b) the number of inputs connected to gate without any degradation in the voltage levels

(c) the number of outputs connected to gate with degradation in the voltage levels

(d) the number of inputs connected to gate with degradation in the voltage levels

I got this question by my school principal while I was bunking the class.

I want to ask this question from Digital Integrated Circuits in section Boolean Algebra and Minimization Techniques and Logic Gates of Digital Circuits

Answer 1

Right choice is (b) the number of inputs connected to gate without any degradation in the voltage levels

Easiest explanation: Fan-in is defined as the maximum number of inputs that can be connected to the output of a gate without any degradation in the voltage levels. For example, an eight-input gate requires one Unit Load per input. It’s fan-in is 8.