History of digital week3
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Transcript of History of digital week3
History of the Digital Revolu3on
Week #3: Quiz #1 & CD, DAT and Physical Digital Media
TODAY
• Quiz #1 • Discuss one blog news story • Review Reading • Slide Show
CHICKEN & THE EGG
• Which is more important? • Medium • Devices
• Function vs. Form • Do consumers care more about devices or media? • Why do music companies keep coming up with new devices? • Every new medium has always been more expensive than its predecssors
DRIVERS
• Quality • Mono, Stereo, Quad, 5.1, 7.1, 9.1 • MP3 to 24/98 • Can consumers hear the difference?
• ProQit • Reselling the same music in new formats
• Value • How much can Qit on one product?
• Consumer Demand • Need vs. Want
Timeline
1992 MiniDisc 1987
DAT Tape
1987 Sony DAT Walkman
1981 5.25” Floppy
Disk
1982 3.5” Floppy Disk
1982 Compact Disc
Billy Joel “52nd St”
1984 Sony Discman
1986 Double-‐Sided 3.5”
1987 HD 3.5”
1999 Flash Drives
THE 80’S WERE A GOOD DECADE FOR DIGITAL
1991 Zip Drive
1988 1st Commercial DAT
1990 CD-‐R
1992 Digital Cassette
DIGITAL MEDIA
• HARD DISCS • FLOPPY DISCS • DIGITAL AUDIO TAPE (DAT) • DIGITAL COMPACT CASSETTE • MINIDISCS • COMPACT DISCS • ZIPDRIVES • FLASH DRIVES
FLOPPY DISKS • 8-‐inch Floppy (1967 and bare until 1971): 80 kb • Single-‐sided GCR (Apple Mac): 400 KB (1984) • Single-‐sided MFM (IBM PC): 360 KB (1985) • Double-‐sided GCR (Apple Mac): 800 KB (1986) • Double-‐sided MFM (IBM PC): 720 KB (1986) • HD: 1.44 MB (1987) • ED: 2.88 MB (1991) Zip drive
Source: http://www./ileformat.info/media/3.5-‐/loppy/
HOW MANY BYTES? ITEM HOW MANY BYTES • A binary decision 1 bit • A single text character 1 byte • A typical text word 10 bytes • A typewritten page 2 kilobytes ( KB ) • A low-‐resolution photograph 100 KB • A short novel 1 megabyte ( MB ) • The contents of a 3.5 inch Qloppy disk 1.44 MB • A high-‐resolution photograph 2 MB • The complete works of Shakespeare 5 MB • A minute of high-‐Qidelity sound 10 MB • One meter of shelved books 100 MB • The contents of a CD-‐ROM 500 MB • One full CD of music 700 MB • A pickup truck Qilled with books 1 gigabyte (GB ) • The contents of a DVD 17 GB • All the works of Beethoven 20 GB • A library Qloor of academic journals 100 GB
HOW MANY BYTES ITEM HOW MANY BYTES • 50,000 trees made into paper and printed 1 terabyte ( TB ) • An academic research library 2 TB • The print collections of the U.S. Library of Congress 10 TB • The National Climactic Data Center database 400 terabytes • Three years' of EOS data (2001) 1 petabyte ( PB ) • All U.S. academic research libraries 2 PB • All hard disk capacity developed in 1995 20 PB • All printed material in the world 200 PB • Total volume of information generated in 1999 2 exabyte s ( EB s) • All words ever spoken by human beings 5 EB
Source: http://searchstorage.techtarget.com/de/inition/How-‐many-‐bytes-‐for
SPECIFICATIONS • DIGITAL AUDIO TAPE (DAT) • Sony • 32, 44.1 or 48 kHz (16 bit) • 120 minutes Capacity (perfect
for album archives) • Uncompressed • Rewritable • Primary use became audio-‐
mastering, archival and data back up (up to 80 gig of data)
SPECIFICATIONS • DIGITAL COMPACT CASSETTE • Philips and Matsushita • 32, 44.1 or 48 kHz (16 bit) • 105 minutes • Helical Scan (similar to VHS) • Digital or Analog • MPEG-‐1 Compression (4:1) • Backwardly compatible • SCMS Copy protection • Rewritable • Not viable as data-‐backup or PC
recording system
SPECIFICATIONS • MINIDISC • SONY • 32, 44.1 or 48 kHz (16 bit) • 74 to 80 minutes • 1 GB of data • Digital Only • Consumer version of DAT • ATRAC Compression (5:1) • Many digital encoding formats available
(supported PCM) • SCMS Copy protection • Rewritable • Not widely used as data-‐backup or PC
recording system • Competed with CD-‐r’s and then MP3 players
SPECIFICATIONS
SPECIFICATIONS • COMPACT DISC • Phillips & Sony • At its introduction in 1982, contained more memory
than a typical PC’s internal HD • 80 minutes (uncompressed) • 700 MB data • No copy-‐protection (Red book warning): Analog Hole • Various formats
• CD • CD-‐Rom • CD-‐R (up to 52x) • CD-‐RW (4x-‐12x) • Photo-‐CD • Enhanced-‐CD • CD-‐I
• Size and capacity supposedly determined by Sony EVP, Norio Ohga, to have Beethoven’s 9th Qit on single CD for his wife
MOST VERSATILE?