D I F

Lesson 02:Hardware

What Can a Computer Do?

• A computer can play music – iPod nano 8 GB ($120)

• A computer can play TV Shows– 10-Inch Television ($130)

• A computer can play movies.– DVD Player ($40)

• A computer can play games.– Xbox Arcade ($200)

Computer Do Even More

Size of Wikipedia in English If Printed(1.2 TB)

Calculators, Word Processors, Image Editing, Animations, Film Editing, Slide Presentations, Web Design, Web Browsing, Programming, Simulations, Virtual Reality, Research, Streaming Video, Streaming Audio, File Transfers, E-Mail, Photo Albums, DVD Burning,

Memorize p3.1415926535897932384626433832795028841971693993751058209749445

923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989

Speed p

http://www.youtube.com/watch?v=HiliHq8phgE

p is an Important Number The ratio of a circle’s circumference to its diameter.

A circle with a diameter of 1 has a circumference of pBut We Don’t Want to Have to Memorize It

A Computer is a Cognitive Prosthesis

Air Traffic ControlLong Distance Phone Calls

Computer-Generated Imagery (CGI)Human Genome Project

Large Hadron Collider (LHC)Computer Simulations

Human Computers

Other Kinds of ComputersAbacus

Virtual Abacus can be found at:http://www.tux.org/~bagleyd/java/AbacusApp.html

Other Kinds of ComputersAstrolab

The Difference Engine

http://www.youtube.com/watch?v=dnxylAJ0M9QBabbage Difference Engine

ENIACThe First General-Purpose Electric Computer

(200kHz) Modern Desktops have 1,000 Times the Computing PowerAnd Millions of Times the Storage Capacity

UNIVAC

2.28 MegaHertz (MHz) Processorhttp://www.youtube.com/watch?v=FMXT4f8C63A

Remington Rand UNIVAC Commercial

Other Kinds of ComputersSlide Rule

Virtual Slide Rulehttp://sliderulemuseum.com/SR_Course.htm

Cray Computer

80-105 MHzMade Animations for Tron (1982)

Scientific Calculator

6 MegaHertz (MHz) ProcessorThere’s a Scientific Calculator on your computer.

Cell Phone

600 MegaHertz (MHz) Processor, 256MB Ram

Modern Desktop

2.5 GigaHertz (GHz) Processor, 1-2 GigaBytes of RAM

The Kraken

1 Petaflop (1,000,000,000,000,000 Calculations Per Second)

Lab:Dissecting

a Computer

Motherboard

Central Processing Unit (CPU)

Random-Access Memory (RAM)

Read-Only Memory(ROM)

Tape Drive

Hard Drive

1GB Then and Now

Other Persistent Storage Devices

• Compact Discs (CDs): 700MB• Digital Versatile/Video Disc

(DVD): 5 – 9.4 GB• Solid-State Drive / Flash Drive

(Thumb Drive): 1 – 16 GB

Networking

Wireless Router

Peripherals

• Keyboard• Mouse• Monitor• Scanner• Webcam• Camera• Printer• Speaker

Keyboard KarateGeneral Windows Text Editing Web Browser Advanced

HOME Window Key CTRL-C, CTRL-V ALT-HOME ALT-PrtScn

INSERT ALT-TAB CTRL-X, CTRL-V ALT-LEFT ARROW CTRL-ALT-DEL

DELETE ALT-SHIFT-TAB CTRL-Z ALT-RIGHT ARROW

PAGE UP CTRL-A CTRL-F5

PAGE DOWN CTRL-F

CTRL-N

CTRL-T

CTRL-TAB

TAB

Tab is Especially Important for Users with disabilities.

Typing Bookmarks

• Table of Keyboard Shortcutshttp://en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

• Learn Touch Typinghttp://www.sense-lang.org/typing/

• Typing Gameshttp://www.onlytypinggames.com/

• Speed Typing Testhttp://10-fast-fingers.com/