Units of data

Why do computers store data in binary?

• Because computers use a base 10 (denary) number system.

• Writing numbers and other information in binary saves time.

• The 0s and 1s in binary represent ON or OFF in the electronic switches in computers.

• The person who invented the modern computer could not count properly.

How many bits are there in a byte

• 1000

• 8

• 4

• None of the above

A bit is the smallest unit of information.

• True

• False

How many bits are there in a nibble?

• 4

• 8

• 16

• None of the above

Why are nibbles important?

• Computers can use them efficiently

• They can store 1 hexidecimal digit

• They can store 1 second of sound

• They have a funny name.

What is the correct order from smallest to largest?

• KB, GB, TB, MB, PB

• PB, TB, GB, MB, KB

• MB, KB, GB, PB, TB

• KB, MB, GB, TB, PB

How many bytes are there in a kilobyte?

• 8

• 1000

• 999

• 42

SELECT THE TWO CORRECT ANSWERS: How many kilobytes are there in a megabyte?

• 8

• 1024

• 1000

• 8000

Which number system do computers use?

• Base 16 - Hexadecimal

• Base 10 - Denary

• Base 2 - Binary

• None of the above

Which of these has the smallest capacity (i.e., the smallest number of bits)?

• 1950 bytes

• 0.5 megabytes

• 2 kilobytes

• 3 gigabytes