Electronic File Storage By daisy81 Jan 1, 1968 Floppy Disc Drives first introduced. Jan 1, 1976 Floppy Disc Drives are reduced in size. FDDs shrink from 8 inches in diameter to 5 1/4 inches. FDDs shrink from 8 inches in diameter to 5 1/4 inches. Jan 1, 1980 FDDs become ubiquitous among average user. Jan 1, 1995 High density diskette's are more commonly used. They are 3 1/2 inches in diameter. http://en.wikipedia.org/wiki/Floppy_disk#History Jan 1, 2000 USB Flash Drives are introduced beginning with 128 mb. Jun 1, 2014 Flash Drives are now currently availabe in terabytes.