-
8' Floppy
1971- IBM 23FD (read-only) [79.75 kB]
1972- Memorex 650 [175 kB]
1973- IBM 33FD / Shugart 901 [237.25 kB]
1976- IBM 43FD / Shugart 850 [500.5 kB]
1977- IBM 53FD / Shugart 850 [980-1200 kB] -
5.25" Floppy
Developed by Allan Shugart because the 8-inch floppys were too large for standard desktop computers.
1976- Shugart SA 400 [87.5 kB]
1978- DD [360 or 800 kB]
1978- Apple Disk II [113.75 kB]
1979- Atari DOS 2.0S [90 kB]
1980- Apple Disk II (DOS 3.3) [140 kB]
1983- Atari DOS 3 [127 kB]
1982- RX50 (SSQD) [400 kB]
1982- HD [1155 kB]
1986- Perpendicular [10 MB] -
3.5" Floppy Created
Had significant advantages over predecessors. Rigid metal cover made it harder to damage magnetic film.
1982- HP single sided [280 kB]
1983- SS (DD at release) [360 kB]
1984- DS DD [720 kB]
1987- HD [1440 kB]
1987- ED [2880 kB]
1991- Floptical (LS) [20385 kB]
1996- Superdisk (LS-120) [120.375 MB]
1997- Superdisk (LS-240) [240.75 MB]
1998/9- HiFD [150/200 MB] -
3' Floppy
Used for a time by Amstrad computers and word processors
1982- [360 kB]
1984- DD [720 kB]
1985- Mitsumi Quick Disk [128 to 256 kB] -
USB First Sold in Market
8 MB Capacity -
USB Capacituy Doubles
USB capacity keeps doubling untill it reaches 1 TB in 2013
