10's complement?

Question

I know what is 2's complement and how to calculate 2's complement. How do I calculate a negative number (ex: -14096) to 10's complement to 8 digits?

Answer 1

10's compliment works just as 2's does.

You compliment each digit.
0 <- > 0
1 <-> 9
2 <-> 8
3 <-> 7
4 <-> 6
5 <-> 5

For subtraction (or adding a negative) first compute the compliment then add. The result sign will match that of the operand with the highest absolute value.