Data representation (computer science)

How do computers operate and communicate?

• Denary

• Hexadecimal

• Binary

• ASCII

On a computer all data is represented by?

• 1's and O's

• symbols

• 1's and 0's

• Letters

How many bits make a byte?

• 8 bits

• 4 bits

• 7 bits

• 9 bits

How many bits was ASCII originally?

• 8 bits

• 6 bits

• 9 bits

• 7 bits

Each pixel is represented by a number of bits.

• True

• False

The characters available on your computer

• Bit Depth
• Binary
• Data Set

Increasing the bit depth of an image...

• Increases quality and decreases file size
• Decreases quality and increases file size
• Decreases quality and file size
• Increases quality and file size

What is metadata

• It is very large data
• It is the data that is stored with every file which gives information about the file
• It is data that is compressed

How many colours do we get from 2 bits

• 2 colours
• 4 colours
• 8 colours
• 24 colours

Convert 7A Hexadecimal to Binary.

• 01111010
• 01111000
• 01110100
• 01110010