Help File:Unsigned values

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In short, a value can hold a negative value if it is a signed value. This is done by inverting all the bits. All 0's become 1's and 1's become 0's. Then the resulting value is incremented by 1.

example:

  12 = 00001100

invert = 11110011

 -12 = 11110100 (notice that if this was an unsigned value this would be 244; because 256-12=244)

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