Data Representation

Convert 128 to binary

• 10000000
• 01111110
• 10000001
• 11001100

A byte is

• 8 bits
• 4 bits

Convert 64 to binary

• 10000000

• 01111110

• 01000000

• 11001100

Convert 3 to binary

• 10000001

• 01111110

• 00000011

• 11001100

Computers use binary because they have circuits which are either on or off, which gives them two states to work from to make calculations and run processes - True or False?

• True
• False

What is the largest number you can represent with 8 bits?

• 64
• 128
• 200
• 255

Denary is a base ____ number system

• 2

• 10

• 16

• 50

Binary is a base ______ number system

• 2

• 10

• 16

• 45

The following is a correct order of units of storage from lowest to highest:

• a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
• a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
• a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
• a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte

Choose the best answer about character sets:

• All characters in character sets are stored in binary.
• Some characters in character sets are stored in binary.
• Only binary characters in character sets are stored in binary.