Questions How Familiar are you with your computer?

Familiar with your computer? Processor Speed? RAM size? Hard Drive size? ?-Bit Processor

Familiar with computer? Cont’d 20 Mb Presentation, will it fit on a floppy? How do I know? What will it fit on?

Computer Basics

The three B’s Binary Bits Bytes %$&*!!! B inary B its B ytes %$&*!!!

Binary Literally “2 numbers” Base 2 Computers: “0” & “1” Off = “0” On = “1”

Bits Binary Digits called “Bits” No. of digits = No. of Bits Eg. 8 digits = 8 Bits

Bits to Bytes 8 Bits = 1 Byte Number below is: “8 Bits” OR “1 Byte”

Bytes get Big Many bytes of data Lowest level – thousands Normal level – millions Large files – billions

Byte Abbreviations Thousands = = kilo Millions = = mega Billions = = giga

Practical Bits 4-Bit color = 16 colors 8-Bit color = 256 colors 24-Bit color = 16 M colors

How large is a Picture? 8” x 10” Picture –80 in DPI resolution –90,000 pixels in 2 Millions of colors –24 bits/pixel Total file size 20.6 Mb

How large is a Picture? Calculations

Practical Bytes Memory -- Mb (mega ) Disk Storage -- Mb & Gb (mega & giga)

Review 3 B’s Binary = base 2 Bit = No. of digits Byte = 1, 8-Bit No.

Computer Components CPU Display Keyboard & Mouse Drives Printers

CPU Central Processing Unit –Main Brain –Processor Speed MHz –Physical Memory –RAM in Mb

Display Monitor/TV Projector

Keyboard & Mouse Inputting Data Talking to Computer

Drives Storage Devices Hard Drives Floppy Drives CD Roms

Printers Output Devices Dot Matrix Ink Jet Laser

Review Components CPU = Brain Display = Monitor Keyboard/Mouse = input Drives = Storage Printers = hardcopy output

Introduction to the Internet

A Short History... Started Late 60s Department of Defense Advanced Research Projects Agency (ARPANET) –Protect Military Communications

A Short History Cont’d 70s - 80s Research/Universities Use to Share Data 1989 Web was Born

Types of Services World Wide Web (WWW) Electronic Mail Newsgroups Telnet File Transfer Protocol (FTP) Gophers

Getting on Internet Begins with HOST –Internet provider = ACCESS Eg.American Online; MCI etc. Colleges often provide student Once online, you “Navigate” web.

Web Browsers Browsers: Netscape Navigator, MS Internet Explorer. –Provide graphical access to Navigating. Start with Uniform Resource Locator -- address

URLs Hypertext Transport Protocol ftp:// File Transfer Protocol news: Usenet (newsgroups) telnet:// telnet gopher://

Top-Level Domains com Commercial Organization org Nonprofit organization gov Government agency edu Educational institution mil Military installation

Using Available on Internet Provider Free E- Mail with Web access –Hotmail, Rocketmail, Yahoomail Free w/no access via Juno.com.