2. System – Input, Process, Output
Data Information
Input Process Output
3. Lesson Objectives
To know what is expected from you during the AS ICT
course.
To understand what topics are covered in AS ICT,
how you will be assessed and when you will be
assessed.
To be able to define ICT, a system and an ICT System.
4. What is Data?
In pairs discuss what you think Data is?
Data can be defined as a set of recorded facts, numbers
or events that have no meaning.
Data is meaningless until it is given relevance.
All data on a computer is represented by 0’s and 1’s.
5. Types of Data
What are the different types of data?
Text
Numeric
Boolean/Logical
Images
Audio
Video
6. Encoding Data
Decimal Binary Symbol Description
48 00110000 0 Zero
49 00110001 1 One
50 00110010 2 Two
51 00110011 3 Three
52 00110100 4 Four
53 00110101 5 Five
54 00110110 6 Six
55 00110111 7 Seven
56 00111000 8 Eight
57 00111001 9 Nine
