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

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

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

Adding 01111111 (127) and 00000001 (1) in 8-bit two`s complement produces:

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

Which 8-bit two`s complement number has the same numeric value as its unsigned interpretation?

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

What is the decimal value of 8-bit two`s complement 10101010?

How do you obtain the two`s complement (negation) of a binary number?

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

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

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