laptop is a portable personal computer to mobile use.A integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad or device pointer) and speakers in one unit. A laptop is powered by the mains via an AC adapter, and can be used outside of an electrical outlet using a rechargeable battery.
The laptops, originally based on monochrome CRT and became modern laptops were originally considered to be a small niche market, especially for specialized field applications such as military accountants and sales representatives. As laptop computers became smaller, lighter, cheaper, more powerful and screens got bigger and better, laptops became very widely used for all kinds of purposes.
