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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What is the 8-bit two`s complement representation of +127?

Which 8-bit two`s complement binary represents decimal -128?

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

Which 5-bit two`s complement binary represents decimal -16?

What is the 8-bit two`s complement representation of decimal -15?

What is the decimal value of 6-bit two`s complement number 110101?

What is the 8-bit two`s complement representation of decimal -100?

What is the range of values for 4-bit two`s complement?

What is the 8-bit two`s complement result of 00110010 - 00011110?

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

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

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