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 Vintage Wards Airline Record player Phonograph Rare US $250.00 
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 Technics SL-3 SL3 DC Servo Automatic Turntable System Phonograph Record Player US $83.99
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 VINTAGE CHILDS PORTABLE DEJAY SP 30 RECORD PLAYER-TURNTABLE CASE PHONOGRAPH-45'S US $45.99
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 Vintage Wooden Emerson Phonoradio Phonograph Tube Radio Turntable Record Player US $75.00
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 VINTAGE GARRARD RC 88/4 TURNTABLE RECORD PLAYER 16/33/45/78 AUTO MONO PHONOGRAPH US $13.50
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 Vintage Sears Solid State AM Radio Phonograph Record Player US $34.95
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 VINTAGE AIRLINE RECORD PLAYER RADIO PHONOGRAPH AUDIO SUITCASE-WORKING CONDITION- US $301.00
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 7 VINTAGE PHONOGRAPH RECORD PLAYER NEEDLE & CARTRISGE CATALOGS JENSEN EMPIRE ETC US $20.00
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 Vintage 1982 Vanity Fair Annie Phonograph Electric Record Player. Works Great!! US $32.00
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 ANTIQUE ,VINTAGE VICTROLA RECORD PLAYER. OLD PHONOGRAPH COLLECTABLE US $132.60
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 Lenco Shure M7D Professional Stylus Phonograph Record Player Turntable US $76.00
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 Burkes Radio Phonograph With Amp Bogen Motion Picture Co VP 17X Record Player US $24.99
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 1925 Brunswick Phonographs-Records-Radiolas 2 Page Ad US $9.99
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 VINTAGE 60s ADMIRAL PORTABLE RECORD PLAYER,TURNTABLE, PHONOGRAPH, WORKS GOOD. US $125.00
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 Vintage Magnavox Service Manual TV Radio Record Player 1981 Schematic Phonograph US $39.95
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 Vintage Antique Old Portable Harmonic Symphonic Record Player Phonograph US $19.99
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 Vintage G.E. Portable 4-Speed TUBE Stereo Record Player/Phonograph-WORKS US $45.00
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 Vintage GE General Electric Wildcat Suitcase Stereo Phonograph Record Player US $152.50
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 Vintage General Electric GE Portable Record Player Phonograph Tube Retro Decor US $49.95
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 RCA 45EY1 PHONOGRAPH RECORD PLAYER DVD RESTORATION KIT US $59.99
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 Silvertone Crank Record Player Phonograph Turn Table US $195.00
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 Vintage Fisher Price Childs Record Player Phonograph US $19.95
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 Vintage GE Trimline Stereo 400 Record Player Antique 1960's Phonograph-Portable US $205.00
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 1948 RCA RP178 RECORD PLAYER PHONOGRAPH SERVICE MANUAL US $7.49
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 Vtg Deco Portable Electric Kuairo Radio Phonograph Record Player Model KT-1500 US $9.99
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 Vintage GE 200 MUSTANG Suitcase Stereo Phonograph Record Player ~ WORKS GREAT ~ US $9.99
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 GARRARD- RECORD PLAYER - PHONOGRAPH F40 45RPM ADAPTER BLACK US $8.95
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 Antique Vintage Original Suitcase Phonograph Record Player Turntable Hand Crank US $12.50
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 GE Console Stereo and Phonograph RC-6731-BWA vintage turntable record player US $99.99
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 Vintage Trav-ler 4 Speed Record Player Phonograph Parts and/or Repairs US $9.99
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 1951 Service Manual Photofact for RCA VICTOR 45-EY-3 Record Changer Phonograph US $19.09
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 Vintage Antique Panatrope 106 Phonograph Record Player Turntable US $49.99
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 Sams Photofacts 1953 Record Player Phonograph Phono Turntable Radio Phonos US $10.95
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 Vintage Stromberg-Carlson Retro Record player /Phonograph- Turntable dated 1960 US $9.99
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 Audiotronics 320 T Phonograph Record Player US $112.50
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 RCA 45EY2 PHONOGRAPH RECORD PLAYER DVD RESTORATION KIT US $49.99
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 Tele Tone 70's Solid State Portable Phonograph Turntable Record Player w/ Box US $29.99
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 RCA 1969 Phonograph/Record Player VMP 14-SERVICE MANUAL US $1.47
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 RCA 1969 Phonograph/Record Player VMP 12-SERVICE MANUAL US $1.47
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 RCA 1970 Phonograph/Record Player VPP 20-SERVICE MANUAL US $1.47
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 RCA 1970 Phonograph/Record Player VPP 12-SERVICE MANUAL US $1.47
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 1948 RCA RP-177 RECORD PLAYER PHONOGRAPH SERVICE MANUAL US $7.25
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 Panasonic Service Manual~SG-634 Phonograph Record Player~Original US $8.98
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 1948 ZENITH S14004 RECORD PHONOGRAPH SERVICE MANUAL US $7.49
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 1949 ADMIRAL RC210 RECORD PHONOGRAPH SERVICE MANUAL US $7.49
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 1971 Heathkit GD-111 Portable Radio Phonograph Record Complete Manual #595-1363 US $25.00
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 VINTAGE AUDIOTRONICS 304E WORKING RECORD PLAYER lp 78 turntable phonograph US $65.00
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 VINTAGE 1949 PHILCO DEMONSTRATION ALBUM W/RECORDS PHONOGRAPH STEREO CONSOLE US $19.99
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 Vintage 1978 Fisher Price Record Player Phonograph with Records Works Great Find US $59.99
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 Vintage Montgomery ward airline solid state phonograph record player US $29.95
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 RCA VICTOR Record Player phono phonograph Vtg Photofact repair folder Model 9EY3 US $5.99
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 Panasonic SG-V300 AM FM Stereo Cassette Phonograph Record Player Made in Japan US $44.99
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 Vintage Supreme Portable Phonograph/record player/Turntable~for Parts or Repair US $14.95
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 Beautiful Dual 1019 turntable phonograph vinyl record player buy now free ship US $169.00
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 Vtg Childs Toy Portable DeJay Sp 30 Record Player Turntable Case Phonograph 45s US $44.95
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 GE GENERAL ELECTRIC RP3124B BLUE PLUTO RECORD PLAYER phonograph w bone tone arm US $150.00
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 vintage school classroom record player / phonograph mrp 110p new haven conn. usa US $18.99
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 MOTOROLA 36F1 RECORD PLAYER PHONOGRAPH Original SERVICE MANUAL US $6.50
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 MOTOROLA 66HF1 66HF1B RECORD PLAYER PHONOGRAPH CONSOLE Original SERVICE MANUAL US $7.25
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 MOTOROLA 46HF1 46HF1B RECORD PLAYER PHONOGRAPH Original SERVICE MANUAL US $6.50
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 SMURFS 1982 Vanity Fair Record Player Phonograph Vintage US $49.99
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 1947 OAK 6666 RECORD PLAYER PHONOGRAPH SERVICE MANUAL US $7.99
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 1948 PHILCO M-8 RECORD PLAYER PHONOGRAPH SERVICE MANUAL US $8.99
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 Collaro Record Player Phonograph Turntable 45 RPM Adapter US $13.00
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Phonograph Record
hard disk- a small description
A hard disk is really a set of stacked "disks," each of which, like phonograph records, has data recorded electromagnetically in concentric circles or "tracks" on the disk. A "head" (something like a phonograph arm but in a relatively fixed position) records (writes) or reads the information on the tracks. Two heads, one on each side of a disk, read or write the data as the disk spins. Each read or write operation requires that data be located, which is an operation called a "seek." (Data already in a disk cache, however, will be located more quickly.)
A hard disk/drive unit comes with a set rotation speed varying from 4500 to 7200 rpm. Disk access time is measured in milliseconds. Although the physical location can be identified with cylinder, track, and sector locations, these are actually mapped to a logical block address (LBA) that works with the larger address range on today's hard disks.
Hard disks are one of the most important and also one of the most interesting components within the PC. They have a long and interesting history dating back to the early 1950s. Perhaps one reason that I find them so fascinating is how well engineers over the last few decades have done at improving them in every respect: reliability, capacity, speed, power usage, and more.
To many people, a hard disk is a "black box" of sorts--it is thought of as just a small device that "somehow" stores data. There is nothing wrong with this approach of course, as long as all you care about is that it stores data. If you use your hard disk as more than just a place to "keep stuff", then you want to know more about your hard disk. It is hard to really understand the factors that affect performance, reliability and interfacing without knowing how the drive works internally. Fortunately, most hard disks are basically the same on the inside. While the technology evolves, many of the basics are unchanged from the first PC hard disks in the early 1980s.
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