Lesson 02: Hardware. What Can a Computer Do? A computer can play music – iPod nano 8 GB ($120) A...
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Transcript of Lesson 02: Hardware. What Can a Computer Do? A computer can play music – iPod nano 8 GB ($120) A...
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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 p3.14159265358979323846264338327950288419716939937510582097494
45923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185950244594553469083026425223082533446850352619311881710100031378387528865875332083814206171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989
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/