What year was the first floppy disk build?

Answer 1

1. 8-inch - IBM 23FD (read-only) - 1971 (79.7 KB)
2. 8-inch - Memorex 650 - 1972 (175 KB)
3. 8-inch - SSSD IBM 33FD / Shugart 901 -1973 (237.25 KB)
4. 8-inch - DSSD IBM 43FD / Shugart 850 - 1976 (500.5 KB)
5. 5¼-inch (35 track) Shugart SA 400 -1976 (89.6 KB)
6. 8-inch DSDD IBM 53FD / Shugart 850 - 1977 (980 KB)
7. 5¼-inch DD - 1978 (360 KB)
8. 5¼-inch Apple Disk II (Pre-DOS 3.3) -1978 (113.75 KB)
9. 5¼-inch Apple Disk II (DOS 3.3) -1980 (140 KB)
10. 3½-inch HP single sided -1982 (280 KB)
11. 3-inch -1982 (360 KB)
12. 3½-inch (DD at release) - 1983 (720 KB)
13. 5¼-inch QD - 1983 (720 KB)
14. 5¼-inch HD - 1982 (1.2 MB)
15. 3-inch DD - 1984 (720 KB)
16. 3-inch Mitsumi Quick Disk - 1985 (256 KB)
17. 2-inch - 1985 (720 KB)
18. 2½-inch - 1986 - ?
19. 5¼-inch Perpendicular - 1986 (10 MB)
20. 3½-inch HD - 1987 (1.44 MB)
21. 3½-inch ED - 1987 (2.88 MB)
22. 3½-inch Floptical (LS) - (21 MB)
23. 3½-inch LS-120 - 1996 (120 MB)
24. 3½-inch LS-240 - 1997 (240 MB)
25. 3½-inch HiFD - 1998 (200 MB)