Computer Literacy Anthony J. Nowakowski, Ph.D. Secondary Storage

Anthony J. Nowakowski, Ph.D.

Computer Literacy

Secondary

Storage


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

CD-RW


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

Magnetic Tape


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

Floppy Disk


Computer Literacy

Floppy Disk


Computer Literacy

Floppy Disk


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

Hard Disks


Computer Literacy

Hard Disks


Computer Literacy

Hard Disks


Computer Literacy

Hard Disks


Computer Literacy

Hard Disks


Computer Literacy

Hard Disks


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

CD-ROM

1 disk - 1 surface


Computer Literacy

Magnified x 2,500

CD-ROM


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One CD-ROM can store up to 650 megabytes which is about the same amount of data as:


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260,000 pages of text 19,000 pages of images scanned @ 300 x 300 dpi

74 minutes of video

74 minutes of CD quality sound

465 high density 3.5” diskettes

90 hours or almost 4 days at 28,800 baud


Computer Literacy

So what can be done with this enormous capacity?


Computer Literacy

WASHINGTON - Until recently, the government’s $50 million monthly phone bill ran to more than a million pages and ended up boxed in a southern Illi- nois warehouse. But in a developmentboth marvelous and omi-nous, those bills are now available on six shiny CD-ROM discs. Government bosses and investigators can identify in 18 seconds - and without a court order - the date, time, and duration of every long distance call made from hundreds of thousands of federal phones.

Text onlyBy FRANK GREVEKnight-Ridder

TELEPHONERECORDS


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America’s phonebook on CD-ROM Over 81 million listings on fiveCD-ROMs. Find anyone, anywhere as quickly as you can type in a name, address, or even phone number. You can get a complete listing with phone number, address, city, state, and zip code. You can then auto dial the number or print out a list or even mailing labels.

$28.95

Text only


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Graphics only


Computer Literacy

Graphics only

4 years ago!!!4 years ago!!!

NowNow


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Sound only


Computer Literacy

Text

and

Graphics

Now $29.99 with GPSsupport

Now $29.99 with GPSsupport


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Multi-media


Computer Literacy

““... ... in personal computing, software in personal computing, software and applications that combineand applications that combine

MULTIMEDIAMULTIMEDIA


Computer Literacy

““... ... in personal computing, software in personal computing, software and applications that combine and applications that combine texttext,,



Computer Literacy

““... ... in personal computing, software in personal computing, software and applications that combine text, and applications that combine text, high quality high quality graphicsgraphics,,



Computer Literacy

““... ... in personal computing, software in personal computing, software and applications that combine text, and applications that combine text, high quality graphics, high quality graphics, soundsound , ,



Computer Literacy

““... ... in personal computing, software in personal computing, software and applications that combine text, and applications that combine text, high quality graphics, sound , and high quality graphics, sound , and animationanimation or or videovideo.”.”



Computer Literacy

MPC Level 3- SpecificationsMPC Level 3- Specifications 75 MHz pentium computer - 8 megabytes of RAM 540 megabyte hard drive CD-ROM (quad speed) SVGA Video monitor (640x480x16) 16 bit sound card with 3 watts per channel speakers MPEG 1 video playback in a 320 x 240 window @ 30 fps Wavetable synthesis playback of MIDI files


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

Storage

Magnetic

Optical CD-R

Tape

Disk

Floppy

Hard

CD-ROM

Erasable


Computer Literacy

Performance


Computer Literacy

Floppy

Volume


Computer Literacy

Floppy Hard

Volume


Computer Literacy

Floppy Hard Optical

Volume


Computer Literacy

Floppy Hard Optical

Floppy

Speed

Volume


Computer Literacy

Floppy Hard Optical

Floppy Optical

Speed

Volume


Computer Literacy

Floppy Hard Optical

Floppy Optical Hard

Volume

Speed


Computer Literacy

As of last year, DVD’s are now being sold. They store data seven times more densely than CD-ROM’s and on both sides.

650 megabytes x 14 = 9.1 gigabytes!


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This is accomplished by using a higher density.


Computer Literacy

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Computer Literacy Anthony J. Nowakowski, Ph.D. Secondary Storage