1. COMPUTER CONCEPTS Computer Information Systems

2. COURSE COMPETENCIES Explain the functions of computer system components. Describe the information processing cycle. Describe various computer input & output devices. Describe various auxiliary storage devices. Describe wireless and mobile devices. Identify basic networking components.

3. FUNCTIONS OF COMPUTER SYSTEM COMPONENTS

4. PROCESSOR  Central Processing Unit (CPU)  Brain of a computer  Executes program instructions

5. MEMORY  Main Memory / Primary Storage  Used during information processing cycle  Lost when computer powers off

6. INPUT DEVICES  Any peripheral (piece of hardware equipment) used to provide data to the computer  Mouse, keyboard, camera, scanner

7. OUTPUT DEVICES  Any piece of hardware used to communicate the results of data processing  Speakers, printer, monitor

8. STORAGE  Secondary Storage  Not directly accessible by CPU  External hard drive, USB flash drive, memory card

9. INFORMATION PROCESSING CYCLE

10. PARTS OF THE INFORMATION PROCESSING CYCLE Input Process Storage Output

11. ROLE IN THE INFORMATION CYCLE Data is entered Changes, computations, save for future Communicate results

12. WHAT IS THE PURPOSE OF THE INFORMATION PROCESSING CYCLE AS IT RELATES TO COMPUTER SYSTEMS? The main function of a computer system is to process information.

15. INPUT, OUTPUT, AND STORAGE DEVICES

16. CD / DVD  Storage device  Optical disk – uses light / lasers  Often used for music, text files, and photos  Read-only vs. rewritable

17. EXTERNAL HARD DRIVE  Storage  Stores large data sets  Connects by USB port

18. USB FLASH DRIVE  Storage device  Convenient & portable  Fast!  Easy to erase / rewrite

19. KEYBOARD  Input device  Used to enter text information into the computer

20. MICROPHONE  Input device  Records sound & digitizes it to be stored in the computer for playback

21. MONITOR  Output device  Provides a visual display from the computer

22. MOUSE  Input device  Handheld pointing device that controls the on-screen cursor

23. PRINTER  Output device  Produces a computer image on paper  InkJet vs. LaserJet

24. SCANNER  Input device  Images a printed page or graphic by digitizing it

25. SPEAKERS  Output device  Converts electric current into sound format

26. TOUCH SCREEN  Input & output device  Touch-sensitive display screen on which a user can make choices by pressing button images

27. WIRELESS & MOBILE DEVICES

28. Laptop Small, mobile personal computer that runs on a single battery or AC/DC adapter PDA Personal Digital Assistant; used for calculations, clocks, calendars, games, Internet, email, radio, etc.; characterized by touch screens Tablet Notebook- or Slate-shaped mobile computer; touch screen operated with a stylus or digital pen Smartphone Integrates the functionality of a mobile phone with a PDA

29. BASIC NETWORKING COMPONENTS

30. SERVER  Computer designed to process requests and deliver data to other computers over a local network or the Internet  Central repository of data and various programs that are shared by other users in a network

31. NETWORK INTERFACE CARD (NIC)  Expansion card that enables a computer to connect to a network  Most computers now have built-in NICs

32. ROUTER  Join multiple networks together  Able to filter traffic by analyzing IP addresses of senders and receivers

33. SWITCH  Joins multiple computers together within one local area network  Inspects data and determines the source & destination

34. FIREWALL  Protects a computer network from unauthorized access  Also limit access to the outside from internal users

35. QUESTIONS?

36. EXIT TICKET!  3 different input devices  2 auxiliary storage devices  1 basic networking component