Data Representation - Twos Compliment (GCSE Computing)

The following is a GCSE Computing test covering 'Data Representation - Twos Compliment'

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Question 1

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For n-bit two`s complement numbers, what is the representable range?

Does adding 01000000 and 01000000 in 8-bit two`s complement cause overflow?

Which decimal number cannot be represented in 8-bit two`s complement?

What is the 8-bit two`s complement representation of decimal -1?

What decimal value does 8-bit two`s complement 01111110 represent?

Which 8-bit two`s complement binary represents zero?

What is the 8-bit two`s complement result of 01010101 + 11001101?

What is the 8-bit two`s complement representation of decimal -45?

To convert a negative two`s complement binary number to its positive magnitude, you should:

How can overflow be detected when adding two`s complement numbers?

What is the decimal value of the 8-bit two`s complement number 11101100?

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