a number system that uses two distinct symbols (the digits 0 and 1) to represent a number, also called base-2

a binary digit - the basic unit of data within a computer system that has the value 0 or 1

Binary digits

Computing

Representing information

Representing characters

Numbers in binary

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

What does the binary number system use to represent values?

How many different values can a single bit represent?

How do you measure the size of binary data?

They store everything as letters and numbers.

They use sequences of 0s and 1s for all types of information.

Which statement is correct about how computers handle information like text, images and sound?

What does a coding scheme do in computing?

to convert it into a form a computer can use

What is the main purpose of encoding information?

Which of these is an example of a coding scheme?

What is the process of turning 0s and 1s back into readable information called?

Put these steps in order for representing a letter in a computer:

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