https://www.techtud.com/multiple-choice-question/dld-vg16-1m-positive-...
3Comments
Shamshad Hussain saifi @shamshadhussain
30 Dec 2019 09:55 pm

@vikas:

In positive logic representation Bit 1 represents Logic high and Bit 0 represent a Logic low

In Negative logic representation Bit 1 represents logic low and Bit 0 represents logic high 

For negative level ckt ouput must be opposite of given positive level ckt . 

There is some mistake in the question  bcz i have check all three option none of the option matching and if you want ,you can also see in above given solution that none of the ckt output is reverse(not)  of the given ckt

 

Vikas @vikasrajput
31 Dec 2019 12:32 pm
if I have to find the correct ckt quickly. what should be my approach?
How should I find equivalent gate for negative level logic?
I only know that in finding equivalent negative level logic we change AND to OR and OR to AND. I don't know about the remaining gates
Shamshad Hussain saifi @shamshadhussain
2 Jan 2020 07:50 pm
@vikas :For negative level ckt ouput must be opposite of given positive level ckt .
first of all you have to find the truth table of given ckt and after that you have to check with the help of option if any option gives the output (say Y) opposite of given truth table output(say Y) that means the ckt is negative level edge ckt

Pages