when how and who invented the flopy disk?

Answer 1

Seems to be IBM in 1976.
As to how, this should explain it:
http://en.wikipedia.org/wiki/Floppy_disk

Answer 2

The Flopy Disc was invented by Albert Flopy for the 1921 Olympic Games. He had become discouraged at his attempts at the discus event, continually falling over as he did in the circle, often owing to the vast quantities of cheap alcohol he consumed before competition. The invented a disc which 'took off' when thrown and travelled ten times further than the normal discus, powered by hidden rubber bands. His Flopy Disc proved a failure when the main rubber band broke and it flew into the eye of a judge, who discovered the deception. Flopy was banned for life and his disc consigned to the dustbin of time.

I don't know who invented the floppy disc.

Answer 3

Floppy disks, also known as floppies or diskettes (a name chosen in order to be similar to the word "cassette"), were ubiquitous in the 1980s and 1990s, being used on home and personal computer ("PC") platforms such as the Apple II, Macintosh, Commodore 64, Amiga, and IBM PC to distribute software, transfer data between computers, and create small backups. Before the popularization of the hard drive for PCs, floppy disks were typically used to store a computer's operating system (OS), application software, and other data. Many home computers had their primary OS kernels stored permanently in on-board ROM chips, but stored the disk operating system on a floppy, whether it be a proprietary system, CP/M, or, later, DOS. Since the floppy drive was the primary means of storing programs, it was typically designated as the 'A:' drive.

Answer 4

The original 8" floppy disk was invented by David Noble (IBM) in 1969, it carried around 80KB and was read-only.

Answer 5

The original 8" one IBM. Sony invented the 3.5" hard floppy.