c) Sign and Magnitude vs Two's Complement

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6 Terms

1

What methods can you use to represent negative binary numbers?

Sign and magnitude, or two’s complement.

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2

How does sign and magnitude work?

It is when you add a 0 or 1 at the start of the number to represent its sign.

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3

What is the first character in sign and magnitude equivalent to?

The sign of the number.

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4

Does the first character in sign and magnitude have a numerical value?

No.

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5

Define Two’s Complement

Most significant bit is made negative (eg -128 or -8), and all bits to the left are flipped until the last positive bit is reached.

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6

How do you subtract with two’s complement?

Convert a number to being negative, then add the numbers together.

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