Binary of 1011 -

1101

Steps

1. write the msb as itseif (here retain fourth bit say 1 ) and it will be the

msb of binary.

2. add the msb of binary (say 1) with next bit of gray (say 0 ie third bit )and

the sum (1) becomes next bit of binary. note: if any carry generated just discard

it.

3. previous sum (1) is again added with next bit of gray(1 ie second bit) and

this sum(0) becomes second bit of binary .

4. previous sum (0) is again added with next bit of gray (1 ie first bit) and

the sum (1) becomes first bit of binary.