Hello!

Can someone show me how to do this little calculation? I'm a bit confused!

00000 - 10011 = ?
00000 - 00010 = ?
00000 - 00011 = ?

Please show me how you do the borrowing and all that!

Thanks in advance!

 

Computers do not do subtraction.
The simplest solution is to form the 2's complement and add.

 

Computers do not do subtraction.
The simplest solution is to form the 2's complement and add.

There must be a good reason why i'm asking this question...
Actually i'm multiplying signed number using 'Booth's Algorithm'

But yeah your " 2's complement and add" method works.
In fact, you perform a 2's complement only on the 'signed' number then you add.

--» 00000 - 00010 = 11110
--» 00000 - 00011 = 11101
--» 00000 - 10011 = 01101


Thanks MrChips!

 

Try a goolge search on binary arithmetic

 

Hello,

Chapter 2 of the digital part of the eBook will also explain binary arithmetic:
http://www.allaboutcircuits.com/vol_4/chpt_2/index.html

Bertus

 

Try a goolge search on binary arithmetic

I did but the examples on google are too TRIVIAL and obvious but anyways I figured out how it works.

Thanks!

 

Now, see if you can alter the thread title and icon to indicate that you're done with this thread.

 

Now, see if you can alter the thread title and icon to indicate that you're done with this thread.

see this thread

 

Now, see if you can alter the thread title and icon to indicate that you're done with this thread.

Is it ok now or you want me to add [SOLVED] ??

 

We have to get the mods to allow the op to change the thread title, not the post title.

 

We have to get the mods to allow the op to change the thread title, not the post title.

yeh but itll do for now?