Question

If we use an AND gate to inhibit a signal from passing one of the inputs must be ___________

(a) LOW

(b) HIGH

(c) Inverted

(d) Floating

I had been asked this question by my school principal while I was bunking the class.

My query is from Logic Gates and Networks in section Boolean Algebra and Minimization Techniques and Logic Gates of Digital Circuits

Answer 1

The correct option is (a) LOW

Explanation: AND gate means A*B and OR gate means A+B and to inhibit means to get low signal, one of the input must be low. It means (0*1=0 or 1*0=0) we will get low output signal. Thus, AND gate outputs 1 only when all inputs are at logic level 1 else it outputs 0.