Question

Convert the 001001001 and 001000111 to hexadecimal and then subtract in hexadecimal using the 16's complement technique.

Answer 1

I'm confused on what they mean by "16's complement technique", I was only familar with ones and twos complements.

Answer 2

But so far I know that 001001001 is 49 and 001000111 is 47 in hexadecimal.

Answer 3

49 - 47 = ??? using 16's Complement
16's Complement of 47 = B9
1 1
4 9
+ B 9
-------------
1 0 2

Ignore carry...
Final Ans = 0

Answer 4

@JerJason you got it????

Answer 5

final answer = 02

Answer 6

How are you getting B9?

Answer 7

by complementing 47

Answer 8

47 = 01000111
take the 2,s complement of 01000111 that is 10111001

Answer 9

10111001 = B9

Answer 10

thus B9 is the 16 complement of 47

Answer 11

I'm not seeing where you are getting 10111001. 47 flipped is 10111000, so add that to one and get 10110111.

Answer 12

Oh wait nevermind, now I see it. I forgot to add all of the zeros in front of 1. Okay, now this makes sense. Thank you.