DIN
Objectives
Activity 1
Activity 2
Plenary

⏱️ Do It Now

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Y10 AU – P4 – Binary Addition and 2s Compliment

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⏱️ Do It Now:

Answer the following questions

(1) What do we call the 1 or 0 in the highest place value of a binary number?

(2) Put these into the correct order:
MebiByte || Byte || KibiByte || Nibble || Gibibyte || Bit

(3) Complete 10 conversions and screenshot your evidence into OneNote
Denary ↔ Binary Practice

🎯 Learning Objectives

(1) We are learning why and how two binary numbers are added together

(2) We will learn why 2s compliment is used by computers

(3) We will learn how to represent a negative number in 2s compliment form

📖 Binary Addition

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Why Binary Addition?

As computers can only use 1s and 0s, they must also perform all arithmetic in binary.

In fact, computers are only capable of adding!

Computer Scientists have had to develop some ingenious methods in order to get computers to carry out subtraction, multiplication and division.

Subtraction is done by adding a positive and a negative number (we will learn how to make negative numbers today)

Division is done by repeatedly subtracting from an original number until nothing is left and multiplication is done by repeatedly adding the same number for a set amount of times.

Adding two binary numbers together requires an understanding of certain rules.

1 + 0 = 1

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⌨️ Activity 2

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🎓 Plenary

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