Arno Du Toit

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since Aug 20, 2002
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Recent posts by Arno Du Toit

Please can someone give me a clear and simple explanation on how to convert a positive binary number to a negative one. I have come alot of explanations where they say you have to invert the bits and then add one. I have tried to do this, but they do not eplain where you have to add the one. Please explain or point me to an explanation.
Here is an example. 5 in binary is 0101. Invert the bytes you get 1010 then if you add one and drop th e0 at the end you get 1011 which apparently is -5. If you take another number like which is 0110 and you invert it you get 1001, now where do you add the one?? I know the answer is 1010. And then my final question how would you convert a negative binary to a positive one?