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A  computer keyboard  is an input device used to enter characters and functions into the computer system by pressing buttons, or  keys . It is the primary device used to enter text. A keyboard typically contains keys for individual letters, numbers and special characters, as well as keys for specific functions. A keyboard is connected to a computer system using a cable or a wireless connection. Typical keyboard for a desktop computer Most keyboards have a very similar layout. The individual keys for letters, numbers and special characters are collectively called the  character keys . The layout of these keys is derived from the original layout of keys on a typewriter. The most widely used layout in the English language is called  QWERTY , named after the sequence of the first six letters from the top left. Other sets of keys common to almost all keyboards are entering and editing keys (e.g., Enter, Delete, Insert), modifier keys (e.g., Control, Shift), navigatio...

  A laptop, sometimes called a   notebook computer   by manufacturers, is a battery- or AC-powered personal computer ( PC ) smaller than a briefcase. A laptop can be easily transported and used in temporary spaces such as on airplanes, in libraries, temporary offices and at meetings. A laptop can be turned into a desktop computer with a docking station, which is a hardware frame that supplies connections for peripheral  input/output  devices such as a monitor, keyboard and printer. HP HP's EliteBook 805 laptop uses recycled plastic in its speaker enclosure. l Types of laptops Differences in these core components are what distinguish laptop computers. Some core characteristics of laptops are the following: Size.  One of the key points of a laptop is portability. Smaller laptops are lightweight and easier to carry. A bigger laptop offers a bigger screen size. Screen resolution.  Higher  resolution  liquid crystal display or LCD screens display ...