2. Breaking the Code...
Can anyone guess the phrase from this “code”?

3. What happens when....
The letter C is pressed on the keyboard?

4. Learning Objectives Success Criteria Title: ASCII
Understand how characters are represented in binary and be familiar with ASCII and its limitations.
Success Criteria
ALL— can state what ASCII is and why it’s used.
MOST— convert some codes from ASCII into English and answer some questions.
SOME— consider ASCII’s limitations and explore what has been done to overcome them.

5. What is ASCII?
Code number 67
Binary C
C button is pressed
Different sets of codes are available for different types of computer.
PCs use a character set called ASCII, American Standard Code for Information Interchange.
A Character Set is the group of symbols that a computer can represent and includes letters, digits, punctuation marks and control characters.
Control characters are things like Esc and Enter (aka CR because it used to be called Carriage Return).

6. ASCII Explained....

7. ASCII Table You can Google to find out the codes for ASCII: 7 7

8. Computer Science is Cool
Breaking the Code...
Can anyone guess the phrase from this “code”?
Computer Science is Cool 8

9. Task – Convert the following...
ASCII is a code for representing English characters as numbers 9

10. Task – Convert the following...
ASCII makes it possible to transfer data from one computer to another. 10

11. ASCII Questions
Explain how ASCII is used to represent text in a computer system.
What is meant by the character set of a computer ?
Explain the possible limitations of using the ASCII character set for global communication.
Find out what is Unicode?

12. ASCII
Create a coded phrase yourself in ASCII and see if someone else can decode it.