HP Omnibook 300, 1993
At the time of its introduction in 1993, the HP Omnibook 300 was the smallest and lightest PC on the market to feature a full-size keyboard and full VGA (video graphics array) screen. It weighed only 2.9 pounds and was based on the Intel 386 processor. It included Microsoft Excel, Microsoft Word and a pop-up mouse.
Introduced as a "superportable" personal computer, the HP Omnibook 300 weighed only 2.9 pounds.