Year 7 Binary

Binary numbers are made from...

• Imaginary numbers

• 0s and 1s

• 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9

• Computer parts

Computers use binary to store...

• Just programs and code

• Just images

• Just words

• Everything

It is impossible for human beings to understand binary

• TRUE

• FALSE

In a computer's circuits, binary numbers are represented with

• Circuits are either ON or OFF

• The voltage changes between 5.1 and 3.2

• The voltage can change to be any value at all

• ASCII codes

ASCII is used to store

• Binary numbers as 0s and 1s

• The codes for letters and numbers

• Chinese writing

• Code to make programs

Use the table to work out how to write a message saying "HI" with ASCII

• 1111 0000

• 0100 1000 0100 1001

• 0000 1111 0000 1111

• 1000 0100 1000 0101

Bitmap images in a computer are made up of...

• Shapes like circles and triangles

• Nothing that humans can visualise

• Small squares of colour called pixels

• Painted lines

Each pixel has a binary number that tells the computer

• What colour the pixel should be

• How many more pixels to add

• The temperature

• The shape of the pixel