Units of information and Character sets Y10

​Do Now:
Log in
Go to Paper 2 - Binery and Hex > Units of Information
Complete Do Now

Big Question:

Understand that quantities of bytes can be described using prefixes and apply how we convert between them

Understand what a character set is and be able to describe the following character encoding methods:

7-bit ASCII

Unicode.

​Key Words: Bit. Byte, Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), Character Set, Character Encoding, 7-bit ASCII, Unicode

​In a computer, all data is stored in binary form. A binary digit has two possible states - 1 and 0.

​In a computer, all data is stored in binary form. A binary digit has two possible states - 1 and 0.

A binary digit is known as a bit. A bit is the smallest unit of data a computer can use.

​In a computer, all data is stored in binary form. A binary digit has two possible states - 1 and 0.

A binary digit is known as a bit. A bit is the smallest unit of data a computer can use.

Eight bits are known as a byte. A byte is significant in that a single character can be represented in binary in eight bits - one byte.
We will come back to characters later

Multiple Choice

What is the fundamental unit of information?

• Bit

• Byte

• Binary

• Banana

Multiple Choice

What is the name for a group of 8 bits?

• Byte

• Bite

• Octobit

• Octopus

Multiple Choice

How many bytes are there is 1 KB?

• 100

• 1000

• 0.001

• 8

Multiple Choice

How many kilobytes are there is 1 MB?

• 255

• 1000

• 0.001

• 1000000

Multiple Choice

Which of these is not a unit of storage?

• Terabyte

• Gigabyte

• Metabyte

• Kilobyte

Reorder

Reorder the following from smallest to largest

• bit

• Byte

• Kilobyte

• Megabyte

• Gigabyte

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Dropdown

To get from megabytes to gigabytes you ​

Select answer

by 1000

Dropdown

To get from Terabytes to megabytes you ​

Select answer

by 1000 then​

Select answer

​ by 1000

​Class notebook
Activity 1

Multiple Choice

How many bits are used in (standard) ASCII? (1-4

• 16
• 1
• 7
• 8

Multiple Choice

How many bytes are used in Unicode? (1-4)

• 9
• 16
• 1
• 2

Multiple Choice

The ASCII code is represented by using 16 bits.

• True
• False

Multiple Choice

The (standard) ASCII code is capable of representing non-European languages.

• True
• False

Multiple Choice

Upper and lower case letters have a different ASCII code.

• True
• False

Multiple Choice

A character set is...

• what language can be used in a computer system.

• the fonts that a computer has installed.

• a defined collection of characters recognised by a computer.

Multiple Choice

Extended ASCII uses how many bits?

• 7

• 8

• 16

• 32

Multiple Choice

What is a benefit of extended ASCII?

• All major languages can be represented

• Many European languages can be represented as accents are included

• Nothing as it just uses more space to store each letter

Multiple Choice

If the letter A is character code 65, what is H?

• 72

• 71

• 8

• 73