Evolution of Laptops
Portal, first portable computer, appeared in 1980 with 64K RAM and 32-character screen. Osborne 1 (1981) was first true mobile computer with 5-inch screen. Compaq Portable (1982) was first PC-compatible portable computer. Epson HX-20 (1982) was first laptop called "notebook". Grid Compass (1982) introduced first clamshell laptop design
- en.wikipedia.org