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As I understand from references :-

but  1 means high to low

and 0 means low to high

low is 0 and high is 1

and when there is found of 0 inverse the next bits.

is it right?

the comma is the tag separator here, so please do not add tags like this.
I don't know what is happened . I dragged  and dropped tag .
Take care this in future.

I think this helps u.

0 is represented by

1 is represented by

So I draw two encoding scheme.

buddy i want to know why there is two different ones for this?

and 0 has two representation and similarly for 1

can u explain how are u drawing the digital signal in above ones and in which condition we should use which one?
in differential manchester encoding  if next bit same as current bit we will not invert .

if it is different then we will invert the waveform.

See, there are 2 standards .

Forouzan  along with  William stallings book follow IEEE standards . Where Tanenbaum book follows G. E. Thomas standard .

It is just the convention which determine the correct answer.

see this from IIT KGP, they follow IEEE standard - http://nptel.ac.in/courses/Webcourse-contents/IIT%20Kharagpur/Computer%20networks/pdf/M2L4.pdf

and this one from IITB , they follow G E Thomas version --

https://www.cse.iitb.ac.in/synerg/lib/exe/fetch.php?media=public:courses:cs348-spring08:slides:topic03-phy-encoding.pdf

and we generally follow IEEE standards.

see this gate question https://gateoverflow.in/3505/gate2007-it-61

by

In IEEE standard  '1' is represented by low-to-high and '0' represented by high-to-low .

And according to G.E. Thomas' convention   '1' by high-to-low transition     and   '0' is expressed by a low-to-high transition .

sir what about the integral manchester encoding . is it same in Mr. Thomas and IEEE format?
edited by

@hem chandra

and there is no term as Integral Manchester, It was just put there in question to confuse students.

There is no such topic and term like Integral Manchester encoding  . They put this into Gate question to confuse students.

For understanding differential manchester encoding see this thread and clealrly understand 2 given diagrams :

https://electronics.stackexchange.com/questions/142453/differential-manchester-encoding

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