History of Laptop Computers By jbird9650 Apr 11, 1981 Osbourne 1 Jan 18, 1982 Grid Compass Apr 19, 1986 IBM PC Convertible Sep 18, 1989 Mac Portable Oct 18, 1992 Powerbook Oct 18, 1992 think pad Jan 18, 2001 IPad May 18, 2005 Lenovo Tablet x41