I'm trying to figure out how to find 8's complement, but am unable to do so. Online it shows that we need to subtract each digit from 7 when the number is in it's octal bit. It gives the 7's complement and then we add 1 to it to gets the 8's complement.
However some other sources have been subtracting each digit of the number from 8 directly to get the 8's complement.
What is the right procedure of getting 8's complement?