1. Computer and Internet Basics

2. Objectives Define Computers Explore Computer Functions
Categorize Computers
Examine Personal Computer Systems
Explore data, information, and files

3. Objectives Introduce Application and System Software
Define Internet Basics
Connect to the Internet
Understand World Wide Web Basics
Use Browsers
Understand Basics

4. A Computer is a device that
accepts input
processes data
stores data
produces output
(all according to a series of stored instructions)

5. Computer system consists of:
Hardware: microprocessor
Peripheral devices: input and output
Software: programs

6. Two or more computers that are connected and share data and programs
Computer Network
Two or more computers that are connected and share data and programs
LAN is a local area network

7. Computer Functions
Words, symbols, numbers, sound, pictures, program instructions
Input
Program calculates, sorts modifies data
Uses microprocessor or CPU
Process
Results of processing
Reports, graphs, documents, pictures
Printer or monitor
Output
Memory is temporary holding area (RAM)
Storage is permanent (disk)
Store

8. Categorizing Computers
Cost
Usage
Size
Capability

9. Less Powerful Computers
PC/microcomputer
Workstations
Handheld computer/PDA
Videogame console
Sony PlayStation®

10. More Powerful Computers
Server
Supplies network computers with data
Mainframe
Large, expensive, powerful, many users
Reliability, data security, central control important
Supercomputer
Fastest and most powerful
Info web: supercomputer

11. Computer System Peripherals Computer +
input devices + output devices + storage devices

12. System Unit
Power Supply
Storage Devices
Circuit Boards

13. Input/Output Devices Monitor Keyboard Mouse Modem Printer
Speakers/sound card

14. Storage Devices Floppy disk drive Hard disk drive CD-ROM drive
DVD drive
CD writer

15. Data vs. Information Data (symbols) used by computers
Information (meaningful) used by people

16. Data Binary number system to define electronic data 0 or 1 Bit
Byte (8 bits)

17. Files Collection of data on a storage medium Data file (passive)
Executable file (active)
Filename and extension
Image.jpg
Word.exe
Resume.doc

18. System Software
Helps the computer monitor itself in order to function efficiently
Operating system
Master controller of all computer activities
Popular operating systems
PCs: Microsoft Windows, Mac OS
Handhelds: Windows CE and Palm OS
Servers: Linux and UNIX

19. Platform Microprocessor + Operating system
Mac and PC compatibility is an issue
Apple computer = Mac platform
Original IBM computer = Windows or PC platform
Info web: Apple computers

20. Designed to carry out a particular task
Application Software
Microsoft Excel
Microsoft PowerPoint
Designed to carry out a particular task

21. Internet Basics (Cyberspace)
Internet is a collection of local, regional, national and international computer networks that are linked together to exchange data and distribute processing tasks.
Infoweb: cyberspace
Infoweb: internet resources

22. Internet Terminology Backbone: defines main Internet routes TCP/IP:
Constructed and maintained by major telecommunications companies
TCP/IP:
Transmission Control Protocol/ Internet Protocol

23. Internet Terminology Server/server software
IP Address: unique number for each Internet computer

24. Internet Resources Internet Telephony Usenet E-commerce
Instant Messaging
Web Sites
Internet Radio
Download Or Upload
Chat Groups

25. Internet Service Provider (ISP)
Provides internet access to businesses, organizations and individuals
Provides telecommunications equipment
User ID and password required
Connects you to backbone
account monthly fee

26. World Wide Web Basics Files interconnected via hypertext
Web pages make up a web site
Home Page
Links or hyperlinks
Web servers
Infoweb: hypertext

27. World Wide Web Basics http://www.cnn.com/showbiz/movies.htm
URL (Uniform Resource Locator)
No spaces and Case sensitive
HTTP (Hypertext Transfer Protocol) – communications standard
HTML (Hypertext Markup Language)
.htm or .html file extension
Document name
and filename
extension
Folder
name
Web
server
protocol
standard

28. Using Browsers Can type URLs
HTML tags tell browser how to display web page data
Back, forward and stop buttons
Setting a home page
Print options
History list
Favorites and bookmarks
Edit and Find
Infoweb: browser
Microsoft Internet Explorer® and Mozilla Firefox®

29. Search Engines
Keywords

30. Computer and Internet Basics
End