Representing information

Computing

Representing characters

Binary digits

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

a system where a code is used to represent something

converting information from one form into another

converting encoded data back into its original form

a character set that represents each character with a unique numerical value

a number system that uses the digits 0 and 1 to represent data

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

a base-10 number system that uses the digits 0 to 9

a standard measurement used to quantify the amount of digital information

changes the size of the unit by a certain amount

the process of applying an encryption algorithm to plaintext to produce ciphertext that cannot be understood (without decryption)

the process of converting encrypted data (cipher text) back into its original, readable format called plain text

Data representation: text and numbers

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