Basic Computer KnowledgeContents

Basic Computer KnowledgeContents

BASIC CONCEPTS

WORKING IN WINDOWS

USING NCI COMPUTERS

COMPUTER-RELATED EQUIPMENT

LAPTOP

An ultraportable IBM X31 with 12" screen on an IBM T43 Thin & Light laptop with a 14" screen

QWERTY keyboard on 2007 Sony VAIO laptop
A laptop computer, or simply laptop (also notebook computer or notepad), is a small mobile computer, which usually weighs 2-18 pounds (around 1 to 8 kilograms), depending on size, materials, and other factors.
Laptops usually run on a single main battery or from an external AC/DC adapter which can charge the battery while also supplying power to the computer itself. Many computers also have a 3 volt cell to run the clock and other processes in the event of a power failure.
As Personal computers, laptops are capable of the same tasks as a desktop computer, although they are typically less powerful for the same price. They contain components that are similar to their desktop counterparts and perform the same functions, but are miniaturized and optimized for mobile use and efficient power consumption. Laptops usually have liquid crystal displays and most of them use different memory modules for their random access memory (RAM), for instance, SO-DIMM in lieu of the larger DIMMs. In addition to a built-in keyboard, they may utilize a touchpad (also known as a trackpad) or a pointing stick for input, though an external keyboard or mouse can usually be attached.

HISTORY OF IIS
IIS was initially released as an additional set of Internet based services for Windows NT 3.51. IIS 2.0 followed adding support for the Windows NT 4.0 operating system and IIS 3.0 introduced the Active Server Pages dynamic scripting environment.
IIS 4.0 dropped support for the Gopher protocol and was bundled with Windows NT as a separate "Option Pack" CD-ROM.
The current shipping version of IIS is 7.0 for Windows Vista, 6.0 for Windows Server 2003 and IIS 5.1 for Windows XP Professional. Windows XP has a restricted version of IIS 5.1 that supports only 10 simultaneous connections and a single web site.[2] IIS 6.0 added support for IPv6. A FastCGI module is also available for IIS5.1, IIS6[3] and IIS7.[4]
Windows Vista does not install IIS 7.0 by default, but it can be selected among the list of optionally installed components. IIS 7.0 on Vista does not limit the number of connections allowed but restricts performance based on active concurrent requests.