Archivi:SWTPC AC30 Cassette Interface.jpg

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Descrizzion
English: The Southwest Technical Products Corporation (SWTPC) AC-30 tape interface for early personal computers was introduced in May 1976 for $80. Shown with a Sankyo ST-30 cassette recorder, a SWTPC 8K BASIC tape and a TSC 6800 Assembler tape. When the first home computers were introduced in 1975, floppy disk systems cost $2000. Storing data on audio cassettes was the low-cost but slow option that most hobbyists used. SWTPC designed their AC-30 Cassette Interface to meet the proposed "Kansas City Standard" data format. The binary data was recorded using 1200 Hz and 2400 Hz at a 300 baud data rate. At 30 bytes per second it took over 4 minutes to load an 8K file.
Photo taken with a Nikon E3200 camera using tungsten lighting by Michael Holley in September 2005.
Data
Sorgent Transferred from en.wikipedia; transferred to Commons by User:Liftarn using CommonsHelper.
Autor Swtpc6800 Michael Holley
Alter version
  • SWTPC 6800 Computer
    SWTPC 6800 Computer
  • SWTPC AC30 Cassette Interface
    SWTPC AC30 Cassette Interface
  • SWTPC AC30 Cassette Interface
    SWTPC AC30 Cassette Interface

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Public domain Quest'opera chì l'è stada missa in del domini publich del so autor, Michael Holley. Questa norma chì la var in tut el mond.
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  • 2006-02-24 03:39 Swtpc6800 683×394×??? (66450 bytes) Southwest Technical Products Corp. AC-30 Cassette Interface. This recorded computer data in the Kansas City Standard format on audio cassetttes. Introduced in July 1976 and the kit cost $80. Photo by Michael Holley 2005

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Data/OraMiniaduraGrandezzaUtentComent
corent01:19, 30 nov 2011Miniadura de la version di 01:19, 30 nov 20112 100 × 1 200 (299 KByte)Swtpc6800Higher resolution
19:38, 2 avo 2008Miniadura de la version di 19:38, 2 avo 2008683 × 394 (65 KByte)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Southwest Technical Products Corp. AC-30 Cassette Interface. This recorded computer data in the Kansas City Standard format on audio cassetttes. Introduced in July 1976 and the kit cost $

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