A laptop computer, or simply laptop
A laptop computer, or simply ‘laptop‘, is a small battery powered personal computer that usually weighs around 1 to 8 kilograms. These days, many office workers use their laptop as their primary source for computing using an external mouse, keyboard and monitor when in the office, and using the laptop‘s organic screen, pointing device and keyboard when traveling. Laptops usually run on a single main rechargeable battery, or from an external AC/DC adapter that charges the battery while also supplying power to the computer itself.
Laptop batteries usually last from between 2 and 5 hours between recharges. New battery technology due for release this year, is set to extend their useful life by factors of 3 or 4 times. Most laptops also have a button cell battery to run the clock and store the computer‘s bios. In most cases, the laptop also holds an image of the main operating system that can be used to restore full functionality after a virus attack or other computing disaster.
Laptops contain components that are similar to their desktop counterparts and perform the same functions, but are miniaturised and optimised for mobile use, low weight and efficient power consumption. Typically the laptop gives less computing power per dollar because they use customised components and propriety designs to lower weight and give lower power consumption.
Laptops usually have colour liquid crystal displays, and most of them use different memory modules than standard personal desktop computers . In addition to a built-in keyboard, they may also offer users a touchpad (also known as a trackpad) or a track-ball for input, though an external keyboard or mouse can usually be attached... more>>>