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Binary Addition & Hex

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by

Mark Tranter

on 28 September 2012

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Transcript of Binary Addition & Hex

Binary Addition Very similar to how you do addition in denary.
Here are the rules:
0 + 0 = 0
1 + 0 = 1
0 + 1 = 1
1 + 1 = 10 Try this one:

10010011
+ 00110100 Why is hexadecimal used?

One hexadecimal digit represents half a byte (a nibble).
Hex numbers are easier to read, and you are less likely to make errors when using them.

When dealing with longer binary values, it's is easier if you first split them into nibbles and then do the conversion.

So:
11111111 -> FF
10100101 -> A5 If you have a number with only part of a "nibble" at the left end, convert it as if padded with zeros:

101101 -> 00101101 -> 2D
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