Portable computers, which later developed into modern laptops, were originally considered to be a small niche market, mostly for specialized field applications, such as in the military, for accountants, or for traveling sales representatives.
As portable computers evolved into the modern laptop, they became widely used for a variety of purposes.
The terms laptop and notebook are used interchangeably to describe a portable computer in English, although in some parts of the world one or the other may be preferred.
There is some question as to the original etymology and specificity of either term—the term laptop appears to have been coined in the early 1980s to describe a mobile computer which could be used on one's lap, and to distinguish these devices from earlier, much heavier, portable computers (informally called "luggables").
A "personal, portable information manipulator" was imagined by Alan Kay at Xerox PARC in 1968, The portable micro computer Portal of the French company R2E Micral CCMC officially appeared in September 1980 at the Sicob show in PARIS.
It was a portable microcomputer designed and marketed by the studies and developments department of R2E Micral at the request of company CCMC specializing in payroll and accounting.
Despite these setbacks, the laptop computer market continues to expand, introducing a number of laptops like Acer's Aspire and Travel Mate, Asus' Transformer Book, Vivo Book and Zenbook, Dell's Inspiron, Latitude and XPS, HP's Elite Book, Envy, Pavilion and Pro Book, Lenovo's Idea Pad and Think Pad and Toshiba's Portégé, Satellite and Tecra that incorporate the use of laptop computers.
Traditional laptops are the most common form of laptops, although Chromebooks, Ultrabooks, convertibles and 2-in-1s (described below) are becoming more common, with similar performance being achieved in their more portable or affordable forms.Since the introduction of portable computers during late 1970s, their form has changed significantly, spawning a variety of visually and technologically differing subclasses.Except where there is a distinct legal trademark around a term (notably Ultrabook), there are rarely hard distinctions between these classes and their usage has varied over time and between different sources.The Sharp PC-5000, From 1983 onward, several new input techniques were developed and included in laptops, including the touchpad (Gavilan SC, 1983), the pointing stick (IBM Think Pad 700, 1992), and handwriting recognition (Linus Write-Top, 1987).Some CPUs, such as the 1990 Intel i386SL, were designed to use minimum power to increase battery life of portable computers and were supported by dynamic power management features such as Intel Speed Step and AMD Power Now! Displays reached 640x480 (VGA) resolution by 1988 (Compaq SLT/286), and color screens started becoming a common upgrade in 1991, with increases in resolution and screen size occurring frequently until the introduction of 17" screen laptops in 2003.