Grid Compass 1100
The 12-pound Grid Compass 1100--the first computer to use a fold-up, clamshell case--brings us closer to a modern-looking laptop design. Originally designed for NASA and available to consumers in 1982, the Compass 1100 carried 340KB of memory and cost about $8000 including software and a mandatory maintenance agreement. Despite its place in laptop history, the Grid didn't survive long in the marketplace because it wasn't IBM compatible.
Photo credit: Grid Compass 1100 [[xref:http://en.wikipedia.org/wiki/File:GRiD_Compass_1530.jpg|public domain|public domain]]