1. Computers 2014-2015 Mrs. Flowers University High School

2. Outline How we use the computer Computer functions Terminology The components of a computer Networks and the Internet Storage Computer Software Types of Computers Information System Computer Applications

3. Using Computers Checking email ATM Instant Messaging Doing homework Research Blogging Playing games Making our lives easier

4. Information Processing Cycle 1.accepts data: Input 2.processes data: Processing 3.produces output: Output 4.stores results: Storage

5. Beginning Terms Data - raw facts, figures, & symbols given during the input operation Computer data is information required by the computer to be able to operate Information – keeps everything organized, meaningful, & more useful for user User - person who uses computer directly

6. Beginning Terms Cont. Hardware = the physical parts of the computer. Software = the programs (instructions) that tell the computer what to do Default = the original settings; what will happen if you don't change anything.

7. Input & Output Output – Process of transmitting data into a useful form (monitor or a printer) Input – Types of devices that allow data, programs, commands, & user responses to be entered (a keyboard, a mouse, a digital reader)

8. Input Devices To get data, programs, commands or instructions into the computer Keyboard Mouse Microphone (audio data) PC camera (video data) Scanner (image input)

9. Special Input Device Readers

10. Output Devices Monitor – television like display Printer – peripheral that produces a hard copy Speaker – produces sound

11. File Transfer Protocol (FTP) ** Program that manages the moving of files between computers**

12. Instant Messaging

13. Network A network is a collection of computers and devices which allow users to share resources

14. What is a LAN? Local, Area Network A Small group of computers and devices In a limited geographic area

15. What is the Internet? Worldwide connection of networks In 1995 there were 16 million internet users 0.4% of the World’s Population In 2010 we see almost 2 billion internet users 30% of the World’s Population

16. Inter & Intra… What’s the difference? Definition for: inter- A prefix meaning between or among An internet (The Internet) is a network between networks Definition for: intra- A prefix meaning within An intranet is a network within a building or organization

17. Internet Protocol Address Is a unique set of numbers that defines the computers location

18. Browser – program that lets you navigate WWW or view HTML on a CD or DVD

19. WWW (World Wide Web) The WWW, or the Web, is one application that runs on the Internet It is made up of billions of documents called Web pages These pages can contain text, graphics, sound, video and are connected together by links

20. System Unit (Inside the Case) Motherboard = Printed circuit board of a Computer that holds critical information CPU = processor portion that carries instructions of a computer program Main Memory = stores data during processing

21. Digital Information Storage 1 electronic storage unit is a ‘byte’ Kilobyte = 1,000 bytes Megabyte = 1,000,000 bytes (million) Gigabyte = 1,000,000,000 bytes (ONE billion) Terabyte = 1,000,000,000,000 bytes (trillion)

22. Storage Devices A data storage device is a device for recording (storing) information (data).

23. Storage TYPES Magnetic Tape Memory Card (Camera) Floppy Disc (Pretty much obsolete) Optical Disc – CD/DVD Flash Drive/USB Drive Removable Hard Drive & External Hard Drive

24. Types of Computers Personal computers (PCs) Desktop computers Laptop or Netbook computers Handheld computer (including cell phones)

25. Computer Applications in Society Learning Online banking Online investing Health care Research Publishing Travel arrangements Computer-aided Design (CAD) Computer-aided Manufacturing (CAM) Shopping