ipad By lildevilbabe Mar 30, 1857 Phonautoghraph Edouard-Leon Scott Oct 7, 1877 Phonograph Tomas Alva Edison Sep 7, 1887 Gramaphone Emily Berliner Sep 7, 1898 Casset Vlademar Poulsen Sep 7, 1981 Portable CD Player Soney Sep 7, 1991 mp3 Player Motion Pictures Experts Group Oct 23, 2001 ipod Apple Inc Apr 23, 2008 ipad Apple INC.