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ID: 1206419
User: 31.149.85.145
Article: Floppy disk
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(Undid revision 511689798 by Rwessel (talk))
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The earliest floppy disks, developed in the late 1960s, were {{convert|8|in}} in diameter;<ref name="Fletcher"/> they became commercially available in 1971.<ref>{{cite web|url=http://www-03.ibm.com/ibm/history/exhibits/storage/storage_chrono20.html |title= 20th century disk storage chronology |publisher= IBM Archives |date= |accessdate=2011-07-19}}</ref> These disks and associated drives were produced and improved upon by IBM and other companies such as [[Memorex]], [[Shugart Associates]], and [[Burroughs Corporation]].<ref>{{cite web|url=http://www.disktrend.com/5decades2.htm |title=Five decades of disk drive industry firsts |publisher=Disktrend.com |date= |accessdate=2011-07-19}}</ref> The term "floppy disk" appeared in print as early as 1970,<ref>IBM's 370/145 Uncovered; Interesting Curves Revealed, Datamation, November 1, 1970</ref> and although in 1973 IBM announced its first media as "Type 1 Diskette" the industry continued to use the terms "floppy disk" or "floppy".
 
The earliest floppy disks, developed in the late 1960s, were {{convert|8|in}} in diameter;<ref name="Fletcher"/> they became commercially available in 1971.<ref>{{cite web|url=http://www-03.ibm.com/ibm/history/exhibits/storage/storage_chrono20.html |title= 20th century disk storage chronology |publisher= IBM Archives |date= |accessdate=2011-07-19}}</ref> These disks and associated drives were produced and improved upon by IBM and other companies such as [[Memorex]], [[Shugart Associates]], and [[Burroughs Corporation]].<ref>{{cite web|url=http://www.disktrend.com/5decades2.htm |title=Five decades of disk drive industry firsts |publisher=Disktrend.com |date= |accessdate=2011-07-19}}</ref> The term "floppy disk" appeared in print as early as 1970,<ref>IBM's 370/145 Uncovered; Interesting Curves Revealed, Datamation, November 1, 1970</ref> and although in 1973 IBM announced its first media as "Type 1 Diskette" the industry continued to use the terms "floppy disk" or "floppy".
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In 1976, Shugart Associates introduced the first {{frac|5|1|4}}-inch FDD. By 1978 there were more than 10 manufacturers producing such FDDs. There were competing [[floppy disk format]]s, with hard and soft sector versions and encoding schemes such as [[Frequency modulation|FM]], [[Modified Frequency Modulation|MFM]] and [[Group code recording|GCR]]. The 5{{fraction|1|4}}&nbsp;inch format displaced the 8-inch one for most applications, and the hard sectored disk format disappeared. In 1984, IBM introduced the 1.2 MB dual sided floppy disk along with its AT model. IBM started using the 720 kB [[double density]] 3.5" microfloppy disk on its [[IBM PC Convertible|Convertible]] laptop computer and the 1.44 MB [[high density]] version with the [[IBM Personal System/2|PS/2]] line in 1986. These disk drives could be added to older PC models. In 1988 IBM introduced a drive for 2.88&nbsp;MB "DSED" diskettes in its top-of-the-line PS/2 models but this was a commercial failure.
 
In 1976, Shugart Associates introduced the first {{frac|5|1|4}}-inch FDD. By 1978 there were more than 10 manufacturers producing such FDDs. There were competing [[floppy disk format]]s, with hard and soft sector versions and encoding schemes such as [[Frequency modulation|FM]], [[Modified Frequency Modulation|MFM]] and [[Group code recording|GCR]]. The 5{{fraction|1|4}}&nbsp;inch format displaced the 8-inch one for most applications, and the hard sectored disk format disappeared. In 1984, IBM introduced the 1.2 MB dual sided floppy disk along with its AT model. IBM started using the 720 kB [[double density]] 3.5" microfloppy disk on its [[IBM PC Convertible|Convertible]] laptop computer and the 1.44 MB [[high density]] version with the [[IBM Personal System/2|PS/2]] line in 1986. These disk drives could be added to older PC models. In 1988 IBM introduced a drive for 2.88&nbsp;MB "DSED" diskettes in its top-of-the-line PS/2 models but this was a commercial failure.
Reason: ANN scored at 0.951173
Reporter Information
Reporter: Bradley (anonymous)
Date: Wednesday, the 21st of October 2015 at 07:40:45 PM
Status: Reported
Wednesday, the 21st of October 2015 at 07:40:45 PM #101810
Bradley (anonymous)

Fr4RVu http://www.FyLitCl7Pf7kjQdDUOLQOuaxTXbj5iNG.com

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