The Disk II was a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by Apple Computer. It was first introduced in 1978 at a retail price of US$495 for pre-order, it was later $595 (including the controller card and cable). The Disk II was designed specifically for use with the Apple IIpersonal computer family to replace the slower cassette tape storage. A floppy disk is a data storage device that is composed of a ring of thin, flexible (i. ... Steve Wozniak or Woz invented the Apple II, the computer that launched Apple. ... Apple Computer, Inc. ... The disk controller (or hard disk controller) is the circuit which allows the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. ... The Apple II was one of the most popular personal computers of the 1980s. ... For the meaning of cassette in genetics, see cassette (genetics). ...
The first drives sold were built using parts from Shugart Drives, but to reduce costs Apple switched to Alps Electric Company of Japan who built them for half the cost. Early production at Apple was handled by two people, and they produced about thirty drives a day. [1][2] Shugart Associates was a computer peripheral manufacturer, famous for introducing the floppy disk to the microcomputer market. ...
Storage capacity was 112kb or 140kb per drive depending on the firmware revision of the controller card. Apple later offered a DuoDisk drive sub-system with two Disk II drives joined into one unit. A Bell & Howell version of the Disk II was also manufactured by Apple with a black casing color which matched the color of the Bell & Howell Apple II Plus, an authorized clone. In computing, firmware is software that is embedded in a hardware device. ... Categories: Corporation stubs ...
References
↑ "A.P.P.L.E. Co-op Celebrates A Decade of Service", Call-A.P.P.L.E., Feb 1988: 12-27.
↑ "Apple and Apple II History", The Apple II Guide, Cupertino, CA, Apple Computer, Inc., Fall 1990: 9-16.
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