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7. Twos complement. Note that -67 is that number which when added to +67 gives zero. Assuming we are using eight bits to represent a number calculate the twos complement of 67. First replaces 1s with Os and vice versa Next add 1 to your result Now demonstrate that 67 (-67) 0 Then add 47 and -67. Does the answer make sense? How do you know?

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