1. Digital Literacy 1.00 Computer Basics
1.02 Understand computer performance and features. .
Primary sources of information and images:
GCFLearnFree.org,
Microsoft Digital Learning E-Learning Site,
BBC GCSE Bitesize website
Clipart

2. Essential Question:
What are the functions and components of operating systems, programs, and networks?

3. Software

4. Software
Software sends instructions to the hardware to perform necessary tasks.
Also called programs.
Two types of software:
Operating system
Application
Computers read binary code.

5. Operating system software
Click here to play video.
What are the three most common operating systems for personal computers?
Also known as system software.
Controls and manages computer’s memory, processes, software and hardware connected to the computer.
Ensures that your computer is operating properly.
Provides an interface that helps you interact with the computer.
Microsoft
Windows
Mac OS X
Video:
Examples of instructions: boot up, create file, store data, etc. .
Linux

6. Operating system software
What are some operating systems for your mobile devices (phones, tablet computers, MP3 players):
Apple iOS 
Windows Phone 
Google Android.

7. Operating system software
A user interface can be text- based or graphics-based.
Most operating systems have a graphical user interface (GUI, pronounced gooey).
Use the mouse to click on icons, buttons, and menus, and everything is clearly displayed on the screen using a combination of graphics and text.
Windows GUI
A GUI lets you use your mouse to click on icons, buttons, and menus, and everything is clearly displayed on the screen using a combination of graphics and text.
Mac OS X GUI

8. Platform The hardware and the operating systems together.
Programs, also called applications use the platform to perform tasks.

9. Application software
Click here to play video.
Application software is software that that works with the operating system to meet a specific need or perform a specific task such as:
Write letters
Perform calculations
Send
Create illustrations
Play games
Watch movies
Communicate with other computers
Applications, 2:17,

10. Examples of application software
Word Processing Software -allows you to create, edit, and print text documents, such as letters and reports.
Microsoft Word
Spreadsheet Software-used to organize information and perform calculations, such as electronic gradebooks, electronic accounting.
Microsoft Excel

11. Examples of application software
Database Software- allows you to create an electronic filing system, such as an electronic card catalog.
Microsoft Access
Presentation Graphic Software- allows you to present your information in the form of slides. You can add sound, pictures, etc.
Microsoft PowerPoint

12. Examples of application software
Multimedia Software--allows information to presented through audio, video, and animation, in addition to text and graphics.
Real Player
Web Browser Software—used to access and view websites.
Google Chrome
Firefox
Explain how a web browser works: The browser contacts the web server and requests information. The web server sends the information back to the Web browser which displays the results on the computer or other device.

13. Examples of application software
Communication Software-- used by computers to exchange messages and files with other people in a digital format.
Microsoft Outlook
What are some other types of software?
Name some mobile apps you use.
Explain how a web browser works: The browser contacts the web server and requests information. The web server sends the information back to the Web browser which displays the results on the computer or other device.

14. NEtworks

15. Network
Network-a group of computers and associated devices that are linked together to facilitate sharing information and devices.
Computers on the network can communicate with each other.

16. Network components
Server– the main computer on a network that provides services to other computers on the network. It decides which computers are allowed to access the hardware and software on the network.

17. Network components
Workstation– a computer connected to a network. It is used to access the hardware and software on a network.
Communication channel- a path or link that connects computers or peripheral devices to transfer information.
Cables, wireless connections, etc.

18. Types of networks
Local Area Network (LAN)-connects devices within a limited area such as a home or a small group of offices.

19. Types of networks
Wide Area network (WAN)- connects devices in geographically separated areas. You can use the resources of a WAN to connect two or more LANs by using long wires, optical cables and satellites.
The Internet is a example of a WAN

20. The internet
The Internet is a worldwide collection of public networks that are linked to each other for information exchange.
The Internet started as a network to facilitate communication between government and educational departments in the United States.
Intranet- a special type of network to communicate and share information within an organization. It is only accessible to authorized users of the organization.