Year 5 Digital (2.1) Binary and Pixel Quiz

What numbers are used in binary code?

• 0 and 1

• 1 and 2

• 0 and 9

• 1 and 10

Which of the following binary numbers is equivalent to the decimal number 10?

• 1100

• 1001

• 1010

• 1110

What is the letter represented by this binary code?

01000101

• G

• X

• E

• S

Write your first name in binary code.

How many bits are in a byte?

• 4

• 8

• 16

• 32

Which of the following is the largest unit of memory?

• Byte

• Kilobyte

• Megabyte

• Gigabyte

Computers use binary code for everything they do.

Explain how this works and provide some examples of computers using binary code to store, process and transfer data.

Think input / process / output

Explain everything you remember about how bar codes work (look at the picture for clues).

Provide two (2) examples of places you would find a QR code.

Then explain how the QR code works and what kind of information you can find on one.

If we use the RGB colour model, what are the three colours computers use to create the colour for any pixel?

• Red, Orange, Yellow

• Red, Green, Blue

• Yellow, Orange, Purple

• Red, Blue, Purple