1. Information Processing
Lesson 2
Information Processing

2. Objectives Define hardware and software
Explain the three basic computer functions: input, processing, and output

3. Hardware
Software
Hardware refers to the physical components of a computer that can be seen and touched.
Software is a set of instructions or programs that tells the computer what to do.
Including:
Keyboard
Mouse
Network cable
Webcam
Monitor
Printers
Router
Speakers
Motherboard
DVD drive
Two types:
System software
Application software

4. System Software Application Software
programs that control and analyze the computer’s hardware, for example, an operating system or backup software
Application Software
Programs that are designed to help users complete a specific activity or task. For example, if you wanted to search the Internet, you would open an application called a web browser.
Have students name some application software they use regularly.

5. Three Basic Computer Functions
Input
Processing
Output
Input is when a computer takes in data or information through an input device.
Processing is when a computer uses input data or information to obtain a meaningful result. This takes place in its central processing unit or CPU.
Output is when a computer sends out data or information through an output device.
Examples: Keyboard
Screen
Mouse
Scanner
Digital camera
Gamepad
Examples: Printer
Screen
Speakers
Have students talk about different computer types (phone, tablet, embedded system in car, ATM, etc). Can students identify the input and output devices of these computers?

6. Summary Define hardware and software
Explain the three basic computer functions: input, processing, and output