Keyboard• one in all the first input devices used with a laptop.• The keyboard appearance terribly like thevkeyboards of electrical typewriters, with some further keys.• Keyboards enable a soul to input letters,numbers, and different symbols into a laptop• Uses a meeting of buttons or keys.• needs pressing and holding many keys at the same time or in sequence.>>Types of Keyboard• Standard#Desktop laptop keyboards, like the 101-key USA ancient keyboards or the 104-key Windows keyboards, embrace alphabetic characters,punctuation symbols, numbers and a spread of operate keys. • Laptop#A typical laptop computer has a similar keyboard sort as a traditional keyboard, aside from the very fact that almost all laptop computer keyboards condense the symbols into fewer buttons to accommodate less area. • recreation and transmission#The recreation keyboards ar designed for the convenience of the gamers and these sorts of keyboards give the desired controls on the keyboards like back lighting. • Thumb-si impotence#Smaller external keyboards are introduced for devices while not a integral keyboard, like PDAs,and smartphones. • Virtual#The virtual keyboards don’t seem to be really physical keyboards, however they’re simulated employing a software package. • Foldable#Foldable keyboards ar very smart for move.#Simply roll them up then unroll them once you would like them once more. >>Keyboard Layouts• QWERTY• QWERT• A ERTY• DVORAK>>Key sorts>Function keys• The operate keys ar utilized in programs as route keys to perform tasks.• for instance, the F8 key’s the key to open the assistance for programs.>Control Keys• The management keys provide you with further management of a docs.>Keypad• though not obtainable on all laptop keyboards,especially laptops; the keyboard provides the user a fast access to numbers and mathematics functions like and,divide, times, and cipher.>Arrow keys• The arrow keys ar four directional arrow keys that enable the user to maneuver their indicator and position on a page.Screen input devices>The keyboards which are not as hardware and are displayed on the virtual screen are called screen input devices.>These keyboards are used when physically keyboard attacment is not possible.>eg cellphones,tablets,etc.>They come in hand when compactibility is needed.>thus many functions like text prediction and auto correct can be applied easily.>There are many advantages of this type of keyboards.