From an answer sheet ....
$$0110.10_2 – 0011.01_2 = 0110.10_2 + 1100.10_{1s} = 0011.01_{1s}$$
My working from my understanding ...
1 1
0110.10
1100.10 +
----------
10011.00
How did the .01
appear
From an answer sheet ....
$$0110.10_2 – 0011.01_2 = 0110.10_2 + 1100.10_{1s} = 0011.01_{1s}$$
My working from my understanding ...
1 1
0110.10
1100.10 +
----------
10011.00
How did the .01
appear
According to Wikipedia you have an end-around carry when adding in 1's complement. That high order bit in your sum becomes the low order 1