1. Chapter 1 – Introduction to Computers

2. Chapter 1 Learning Objectives
Recognize the importance of computer literacy
Define the term computer and identify its components
Explain why a computer is a powerful tool
Recognize the purpose of a network
Discuss the uses of the Internet and the World Wide Web

3. Chapter 1 Learning Objectives
Identify the types of software
Describe the categories of computers
Determine how the elements of an information system interact

4. Computer Literacy
Knowledge and understanding of computing devices and there

5. Definition of a Computing Device
Electronic device operating under the control of instructions stored in its own memory that;
Accepts data (input) – unprocessed facts, figures, imaged and sound.
Processes data into information (output).
Process - the activity of organizing data into information.
Information - data that is organized, has meaning, and is useful
Stores the data for future use.

6. The Information Processing Cycle
Input data
Process data
Output information
Store data

7. The Components of a Computing Device - Input
Hardware used to enter unprocessed facts, figures, imaged and sound.

8. The Components of a Computing Device - Output
Hardware that conveys information to the user.

9. The Components of a Computing Device – System Unit
Case containing electronic components used to process data
The system unit contains the motherboard

10. The Components of a Computing Device – System Unit
The two main components on the motherboard are
Central Processing Unit (CPU)
Also called a processor
Carries out instructions that tell computer what to do
Memory
Temporary holding place for data and instructions

11. The Integrated Circuit
An electronic device first developed in the 1950s, made from semiconductor material such as silicon, containing tiny transistors, resistors, diodes, as well as a number of ever improving and shrinking components.

12. The Integrated Circuit
Device with microscopic pathways that carry electrical currents

13. Storage Holds data for future use.
Storage systems are made up of two parts.
Storage Media - physical material on which data is stored
Storage device- Records and retrieves items to and from storage media

14. Storage- Hard Drive

15. Storage- CD/DVD Drive

16. Storage- USB Flash Drive

17. Storage- Flash Memory Cards

18. What Makes a Computer a Powerful Tool?
Speed
Reliability and consistency
Accuracy
Storage
Communications

19. Computer Networks
A network is a collection of computers and devices connected together via communications media
Networks require a communication device to connect computers and various devices together to send and receive data, instructions, and information
Networks communications occurs over cables, telephone lines, cellular radio networks, satellites, and other transmission media

20. Computer Networks Used to share Saves time and money Resources
Hardware devices
Software programs
Saves time and money
Data
Information

21. Computer Networks - Types
Peer to Peer – simple network of computers and their connected deices that is used in small business and homes
Client/Server in which a server controls access to resources on a network and the clients, or workstations, request resources from the server

22. Computer Networks – The Interenet
The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
Uses of the Internet
Communications
Information Access
Downloading music and video
Shopping
Entertainment
Education

23. Computer Networks – The Interenet
One of the major components of the Internet is the World Wide Web or Web
The Web is made up of billions of Web pages organized into Web Sites
Web pages contain text, graphics, audio, video and links to other pages.

24. Software
A series of instructions that tells the hardware of a computer what to, usually called a computer program or simply a program.
Two main categories of software
System - programs that control the operations of a computer
Applications - programs designed to perform a specific task for a user

25. Graphic User Inter face (GUI)
Allows you to interact with the software using text, graphics, and visual images such as icons
Controls how you enter data and instructions and how the screen displays information

26. Categories of Computing Devices Desktop
Designed so all of the components fit entirely on or under a desk or table

27. Categories of Computing Devices Notebook
Notebook computer
Usually more expensive than a desktop computer with equal capabilities

28. Categories of Computing Devices Tablet PC
Resembles a letter-sized slate
Allows you to write on the screen using a digital pen

29. Categories of Computing Devices Netbook
A category of small, lightweight, and inexpensive laptop computers suited for general computing and accessing Web-based applications

30. Categories of Computing Devices Handheld
Small enough to fit in one hand
Used by mobile employees such as meter readers and delivery people

31. Categories of Computing Devices Personal Digital Assistant (PDA)
Provides personal organizer functions
Calendar
Appointment Book
Address book
Calculator
Notepad

32. Categories of Computing Devices I-Pad
Considered to be a new category of computing device.
A cross between an I-Phone, I-Pod touch and a Web book.

33. Categories of Computing Devices Game Counsels

34. Categories of Computing Devices Servers
Server - controls access to network resources and provides centralized storage

35. Categories of Computing Devices Mainframes
Server - powerful, computer that supports thousands of connected users

36. Categories of Computing Devices Supercomputers
Supercomputer - The fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations

37. Elements of an Information System
Hardware
Software
Data
People
Procedures

38. Computer Applications in Society Education

39. Computer Applications in Society Finance

40. Computer Applications in Society Government

41. Computer Applications in Society Health Care

42. Computer Applications in Society Science

43. Computer Applications in Society Publishing

44. Computer Applications in Society Travel

45. Computer Applications in Society Industry