1. Copyright (c) 2004 Prentice Hall. All rights reserved. 1 Committed to Shaping the Next Generation of IT Experts. Go! Computer Concepts

2. Copyright (c) 2004 Prentice Hall. All rights reserved. 2 MOS Certification More Information: To learn more about becoming a Microsoft Office Specialist, visit www.microsoft.com/officespecialist. www.microsoft.com/officespecialist To learn about other Microsoft Specialist approved courseware from Pearson Education, visit www.pearson.com.www.pearson.com The availability of Microsoft Office Specialist certification exams varies by application, application version, and language. Visit www.microsoft.com/officespecialist for exam availability. www.microsoft.com/officespecialist Microsoft, the Microsoft Office Logo, PowerPoint, and Outlook are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries, and the Microsoft Office Specialist Logo is used under license from owner.

3. Copyright (c) 2004 Prentice Hall. All rights reserved. 3 Objectives Define computer and identify required components Identify the types of computers Describe hardware devices Identify types of software and their uses Describe networks and define network terms

4. Copyright (c) 2004 Prentice Hall. All rights reserved. 4 SCREEN BEAN INTRODUCTION — TEXT: Define Computer What is a Computer? Define Computer

5. Copyright (c) 2004 Prentice Hall. All rights reserved. 5 What is a Computer? A computer is a machine that computes. More specifically, a computer is an electronic system that accepts, stores, processes, and reports data.

6. Copyright (c) 2004 Prentice Hall. All rights reserved. 6

7. 7 Information Processing Cycle Input – The method of getting information into the computer Process – Performing a calculation or logical operation on the information Output – The method of getting data out of the computer Storage – Storing data for future use

8. Copyright (c) 2004 Prentice Hall. All rights reserved. 8 Four Basic Types of Computers Supercomputer – Large, powerful computer used for performing specialized tasks Mainframes – Large computer often found where thousands of people use computers Minicomputer – Used in medium-sized businesses Microcomputer – Smallest type of computer

9. Copyright (c) 2004 Prentice Hall. All rights reserved. 9 Desktop Microcomputer Sits on your desk, table, or other flat surface Has a detachable keyboard, mouse, and monitor

10. Copyright (c) 2004 Prentice Hall. All rights reserved. 10 Laptop or Notebook Microcomputer Smaller than desktops Portable Normally have keyboard, pointing device, monitor built in, but can be connected to detachable devices

11. Copyright (c) 2004 Prentice Hall. All rights reserved. 11 Vary in size; provide convenient way to maintain calendar and address book Can be held in one hand and used with a stick-like device to access features Some come with detachable keyboard Personal Digital Assistants (PDA) or Handheld Microcomputers

12. Copyright (c) 2004 Prentice Hall. All rights reserved. 12 System Unit Main computer unit that holds processing hardware, the electrical power supply, disk drives, circuit cards, ports, and a motherboard The motherboard is the main circuit board that connects all computer components. It holds the CPU, memory (RAM) chips, and expansion cards.

13. Copyright (c) 2004 Prentice Hall. All rights reserved. 13 Central Processing Unit Small but powerful, the CPU gets data from the computer’s memory and processes the data by performing mathematical or logical operations

14. Copyright (c) 2004 Prentice Hall. All rights reserved. 14 SCREEN BEAN INTRODUCTION — TEXT: Let’s discuss RAM and ROM Computer Memory Let’s discuss RAM and ROM

15. Copyright (c) 2004 Prentice Hall. All rights reserved. 15 Computer Memory: Read Only Memory (ROM) and Random Access Memory (RAM) ROM – Comes built-in and is inaccessible to users. Contains instructions for computer to turn on and run when you flip the switch. RAM – Temporarily stores data with which you are currently working. Empties out when you turn off computer.

16. Copyright (c) 2004 Prentice Hall. All rights reserved. 16 Random Access Memory RAM has been compared to human memory – it’s full when you take a test and empties as soon as the test is complete!

17. Copyright (c) 2004 Prentice Hall. All rights reserved. 17 SCREEN BEAN INTRODUCTION — TEXT: RAM = temporary storage or “working” memory Hard drive = permanent storage for data and system files Data Storage Data Storage 1.RAM = temporary storage or “working” memory 2.Hard drive = permanent storage for data and system files

18. Copyright (c) 2004 Prentice Hall. All rights reserved. 18 Data Storage Storage devices - Hardware used to store data and information. Both internal and external storage devices are used by most computer owners. Examples: hard disk drives, floppy disk drives, DVD drives, CD- writers, and ZIP drives.

19. Copyright (c) 2004 Prentice Hall. All rights reserved. 19 Data Storage Storage Media – Used by the storage device to hold the data. Examples: hard disks, floppy disks, DVDs, CDs, ZIP disks.

20. Copyright (c) 2004 Prentice Hall. All rights reserved. 20 SCREEN BEAN INTRODUCTION — TEXT: How do we get data into the computer? How do we get data and information out of the computer? Input Devices and Output Devices How do we get data into the computer? How do we get data and information out of the computer?

21. Copyright (c) 2004 Prentice Hall. All rights reserved. 21 Input Devices The two most common: Keyboard – Contains groups of keys used in different ways to input data: for example, the typing keypad is used to enter text and other data. The numeric keypad is used to enter numbers and perform calculations. Mouse – Small hand-sized unit that acts as a pointing device

22. Copyright (c) 2004 Prentice Hall. All rights reserved. 22 Output Devices Hardware used to get data and information from the computer into an understandable format. Monitors (aka computer screens) – Display data, text, and graphics. Printers – Produce paper printouts of data and information. Also can be input devices if they include scanning, faxing, and copying capabilities.

23. Copyright (c) 2004 Prentice Hall. All rights reserved. 23 SCREEN BEAN INTRODUCTION — TEXT: How do we get data into the computer? How do we get data and information out of the computer? Software Application Software Operating System Software

24. Copyright (c) 2004 Prentice Hall. All rights reserved. 24 Software Software describes the programs installed on computers. Computers require two types of software: - operating system software - applications software

25. Copyright (c) 2004 Prentice Hall. All rights reserved. 25 Operating System Software… is busy behind the scenes, performing housekeeping tasks, enabling you to access programs, and managing files. It also ensures that everything is running properly.

26. Copyright (c) 2004 Prentice Hall. All rights reserved. 26 Application Software… is the “star” – it helps you accomplish tasks such as creating letters…

27. Copyright (c) 2004 Prentice Hall. All rights reserved. 27 …performing financial calculations, printing reports… …preparing presentations, and staying organized.

28. Copyright (c) 2004 Prentice Hall. All rights reserved. 28 Let’s find out what a computer network is and what it can do for us! Computer Networks Let’s find out what a computer network is and what it can do for us!

29. Copyright (c) 2004 Prentice Hall. All rights reserved. 29 Computer Networks – Important Terms Network – Two or more computers connected so they can share hardware, software, and other resources Server or host – All other computers in a network are connected to this computer Client or workstation – Computer that is connected to a server or host Topography – How computers and devices in a network are arranged and connected

30. Copyright (c) 2004 Prentice Hall. All rights reserved. 30 Types of Networks Star Network – All computers and other devices are connected to a host Bus Network – Each computer, printer, or device is connected to a central high- speed line. No host or server is used.

31. Copyright (c) 2004 Prentice Hall. All rights reserved. 31 Types of Networks (continued) Ring Network – All devices connect to a circular line around which data travels in one direction Wireless Network – Connection between computers and devices is made using radio signals, microwaves, satellite signals, and other wireless media

32. Copyright (c) 2004 Prentice Hall. All rights reserved. 32 Local Area Networks (LANs) LANs connect computers that are physically located in a close area, such as in the same room, on the same floor, or within the same building.

33. Copyright (c) 2004 Prentice Hall. All rights reserved. 33 Wide Area Networks (WANs) WANs connect computers and other hardware across a larger area: across campus, across town, or across the country.

34. Copyright (c) 2004 Prentice Hall. All rights reserved. 34 Summary A computer system consists of these components: input, process, output, and storage There are four basic types of computers: supercomputers, mainframes, minicomputers, and microcomputers Hardware devices are the physical pieces that make up the computer system There are two basic types of computer memory: Read Only Memory (ROM) and Random Access Memory (RAM)

35. Copyright (c) 2004 Prentice Hall. All rights reserved. 35 Summary (continued) Software is the term used to describe the programs installed on computers. There are two types of software: operating systems software and applications software. A computer network is computers connected to share hardware, software, data, and other resources  Local Area Networks (LANs) are networks connecting computers in a close space  Wide Area Networks (WANs) are networks connecting computers in a larger geographic area

36. Copyright (c) 2004 Prentice Hall. All rights reserved. 36 Questions?