Going from sign/magnitude of a hex value to it's two's complement

[leo255]

Homework Statement

Hi all!

You are given the hex 9AB. I need to go from sign and magnitude of it, to it's two's complement (in 13-bit).

The Attempt at a Solution

What I did was convert the hex to binary:

0100110101011 <-- I added an extra 0 for the 13th bit

I then flipped the digits, and added "1" and got this:

1011001010101

The answer to this is supposed to be 2475, and I'm not getting that. Would appreciate any help anyone can give.

Thanks.

 

[jedishrfu]

The 9AB is 2475 decimal could that be the problem?

You can check it here:

http://www.binaryhexconverter.com/hex-to-decimal-converter

 

[phinds]

Your two's complement is correct.