Representing characters and characters sets

Question 1

• What is a character set?

Answer 1

• Defined list of characters recognised by the computer.

-

Question 2

What is each character represented by?

Answer 2

• Unique binary number.

Question 3

What is ASCII?

Answer 3

• 7 bit character set.
• 2^7
  so. .128 characters.

Question 4

What is extended ASCII?

Answer 4

• 8 bit character set.
• 2^8
• 256 characters

Question 5

What is Unicode?

Answer 5

• 24 character set
• 2^24
  > 16 million characters.

Question 6

How do you work out the file size?

Answer 6

• Bits per character x number of characters.