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8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
3.5-inch and 5.25-inch drives connect to the floppy controller using a 34-conductor flat ribbon cable for signal and control. Most controllers support two floppy drives, although the Shugart standard supports up to four drives attached to a single controller. A cable could have 5.25-inch style connectors, 3.5-inch style connectors, or a ...
Micropolis boot diskette, as used with the Micropolis dual 5.25-inch drive to boot an IMSAI 8080.. Micropolis's first advance was to take the existing 48 tpi (tracks per inch) standard created by Shugart Associates, and double both the track density and track recording density to get four times the total storage on a 5.25-inch floppy in the "MetaFloppy" series with quad density (Drives :1054 ...
Close-up of 3 + 1 ⁄ 2-inch disk Standard 3 + 1 ⁄ 2-inch disk with a blank label. In 1981, Sony introduced their 3 + 1 ⁄ 2-inch floppy disk cartridge (90.0 mm × 94.0 mm) having a single sided unformatted capacity of 218.8 KB and a formatted capacity of 161.2 KB. [citation needed] A double sided version was available in 1982.
2 1 ⁄ 2 inch [2] [3] Single drive: 1, diskette: 2 16 8 512 2× 64 kB 270 GCR (4/5) Internally based on FDU-250 Micro Floppy Disk Drive Unit [2] Thomson: 5 1 ⁄ 4 inch Single 1 40 16 128 80 kB 300 FM Thomson UD90.070 Double 2 256 320 kB MFM Thomson DD90-320 [NB 17] 3 1 ⁄ 2 inch Double 1 80 16 256 320 kB 300 MFM Thomson TO9, Thomson DD09-350
A 3.5-inch floppy drive. 3.5-inch bays, like their larger counterparts, are named after diskette dimensions; their actual dimensions are 4 inches (101.6 mm) wide by 1.028 inches (26.1 mm) high. Those with an opening in the front of the case are generally used for floppy or Zip drives. Hard drives in modern computers are typically mounted in ...
In 1989, Tandy updated the 3000 HL with several improvements: clock speed of 10 MHz and a 3.5 inch high density (1.44 MB) floppy disk drive. The all-new cabinet has two 3.5 inch and two 5.25 inch drive bays. It has the same expansion slots as the 3000 HL (three AT and four XT slots) plus one high-speed 10 MHz slot dedicated to memory expansion.
The original model, retrospectively called the Pivot I, [6] was unveiled at COMDEX/Spring '84 in May 1984 and released in November that year. [7] [8] The Pivot I has one 5.25-inch floppy drive, 256 KB of RAM, and an LCD capable of displaying bitmapped graphics at an abridged resolution of 480 by 128 pixels or text at 80 columns by 16 lines.
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