Lap top computers
January 30th, 2010 | by admin |Almost all manufacturers have conceived their laptops to work with a keyboard and mouse, and they will also have a touch pad that can be used to substitute for the mouse. Lap top computers come in three varieties, and these are based on the size. An extremely small lap top will generally weigh less than 1.7 kilograms, while a lightweight slim version will weigh up to 2.8 kilograms, and a medium sized laptop will weigh up to 3.5 kilograms. The idea for the laptop existed prior to the invention of the personal computer, and was originally developed in the 1970’s. The first to market was the Osborne 1, which was released in 1981.