G9 L1 Plenary

Why do computers use binary instead of denary?

• Denary is slower to process

• Binary uses less electricity

• Transistors only have two states

• Denary uses letters as well as numbers

Which of these is an example of data that must be converted to binary?

• A paper document

• Spoken language

• A handwritten signature

• A photo stored on a phone

What does the binary number 01000001 represent in ASCII?

• Number 41

• The letter A

• The letter B

• The number 65

What is a bit?

• 8 binary digits

• A small file

• The smallest unit of data

• Half a byte

Which part of the computer uses voltage levels to represent binary?

• Screen

• Printer

• Circuit

• Mouse

What is a byte?

• 2 bits

• 4 bits

• 8 bits

• 16 bits

How many bytes are in 1 kilobyte (KB)?

• 1024

• 1000

• 500

• 8

What would be the best unit to measure the size of a high-quality video?

• Bits

• Kilobytes

• Gigabytes

• Nibbles

What storage unit is larger than a gigabyte?

• Megabyte

• Kilobyte

• Byte

• Terabyte

Why do we use units like MB or GB instead of just bytes?

• They are easier to multiply

• Computers only accept large units

• It’s more readable for humans

• Bytes are not accurate