As the personal computer (PC) became feasible in 1971, the idea of a portable personal computer soon followed.
Most modern laptops feature integrated webcams and built-in microphones, while many also have touchscreens.
Laptops can be powered either from an internal battery or by an external power supply from an AC adapter.
One notable example of a subnotebook is the Apple Mac Book Air.
Netbooks first became commercially available around 2008, weighing under 1 kg, with a display size of under 9".
A laptop, often called a notebook or "notebook computer", is a small, portable personal computer with a "clamshell" form factor, an alphanumeric keyboard on the lower part of the "clamshell" and a thin LCD or LED computer screen on the upper part, which is opened up to use the computer.