Numbers in binary

Computing

Representing information

Representing characters

Binary digits

Measurements of data

Turing's mug cryptography challenge

In this unit pupils will be introduced to binary digits and how they can be used to represent text and numbers. Pupils will perform conversions between binary and decimal numbers and how binary can be used to represent characters. They will explore how cryptography can be used to protect data.

Data representation: text and numbers

Match the binary value to its decimal value.

What is the decimal value of the binary number 1101?

Match the decimal value to its binary value.

Which of these binary numbers is equal to the decimal number 21?

What is the smallest unit of data in a computer?

Put these steps in order to measure the size of binary data:

computer circuits can easily show two states: on and off

Why do computers use binary to represent information?

If you have 4 bits, how many different values can you represent?

What does having more bits allow you to do?

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