Epson HX-20

The Epson HX-20 (also known as the HC-20) is generally regarded as the first laptop computer, announced in November 1981, although first sold widely in 1983. Hailed by BusinessWeek magazine as the “fourth revolution in personal computing”, it is generally considered both the first notebook and handheld computer.

Read more about Epson HX-20:  Features, LCD, Monitor, Expansion Port, Memory Map, Similar Epson Models

Other related articles:

Epson HX-20 - Similar Epson Models
... compatible with PX-4) PX-4 (successor of the HX-20, with larger screen and CP/M compatible like the PX-8) PX-8 (Geneva) QX-10 (CP/M desktop), QX-16 (like the QX-10 but with MS-DOS ...
History Of Laptops - Epson HX-20
... Another significant machine announced in 1981, although first sold widely in 1983, was the Epson HX-20 ... A simple handheld computer, it featured a full-transit 68-key keyboard, rechargeable nickel-cadmium batteries, a small (120×32-pixel) dot-matrix LCD display with 4 lines of text, 20 characters per line text mode, a 24 column dot matrix printer, a Microsoft BASIC interpreter, and 16 KB of RAM (expandable to 32 KB) ...