Key Board:-
The most commonly and usually used input device which you see in every house with computer is keyboard and mouse.
Keyboard is an electonic input device and is used to enter data into the CPU for processing.It is a typewriter like device.All keyboards have no. ,keys, punctuation keys,and a space bar.They also have functionkeys,numeric ketpad,arrow keys, and certain additional keys kile page-up,page-down, home,end etc.
The Qwerty keyboard was designed in 1868 in Milwaukee by Christopher Latham Sholes, who placed the keys corresponding to the most commonly used letter pairs at opposite ends of the keyboard, in order to prevent the typewriter hammers of the time from becoming jammed with one another. This keyboard was first sold by the company Remington in 1873. Therefore, the Qwerty keyboard was designed from a purely technical perspective, hindering usability and efficienc
Types of keyboards
There are four types of keyboards for PCs. The first three were invented by IBM, while the latter is the result of changes made when Microsoft Windows 95 was released. These are the four kinds of keyboards:
The 83-key keyboard (PC/XT)
The 84-key keyboard (PC/AT)
The 105-key Microsoft Windows 95-compatible keyboard.
Division of keyboard:-
Standard key.
Numeric keys
Arrow keys.
function keys.
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