Data Representation - Twos Compliment (Year 10 Computing)

The following test is covering 'Data Representation - Twos Compliment' for Year 10 Computing.

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Question 1

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

What is the range of values representable with 8-bit two`s complement?

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

What is the 4-bit two`s complement representation of decimal -3?

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

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

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