Disk Unit from an IBM 1301 Data Storage Unit (1962)
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Photo Courtesy of Jason Greenia
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This circular disk is a 24 inch magnetic disc for an IBM 1301 Data Storage Facility. 1301 Data Storage Facility Disk was one of 50 per unit. These units were first introduced in 1962. Capacity of each disk was approximately 500,000 characters (500K). These storage disks were normally attached to an IBM 650 or 1510 CPU. The disk is made of aluminum, about 1/8" thick. Probably one of the largest disks mass produced. |
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Disk, CD ROM and DVD Chronology 1956 IBM RAMAC is first computer to use random access disk drives 1971 IBM (Alan Shugart) develops the 8 inch floppy diskette 1976 IBM introduces the 5-1/4 inch floppy diskette 1981 Sony introduces the 3.5 inch diskette 1985 Philips and Sony introduce the CD-ROM 1996 DVD-ROM is introduced |
History of Computing
An Encyclopedia of the People and Machines that Made Computer History
Copyright © 1982-2001, Lexikon Services "History of Computing" ISBN 0-944601-78-2
