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

Question

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

@JerJason you got it????

anonymous · Answer

final answer = 02

anonymous · Answer

How are you getting B9?

anonymous · Answer

by complementing 47

anonymous · Answer

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

anonymous · Answer

10111001 = B9

anonymous · Answer

thus B9 is the 16 complement of 47

anonymous · Answer

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

anonymous · Answer

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.