Keyboard
The most common input device is the keyboard. It is used to enter both numerical and character type data. It is like a mechanical type writer with alpha numeric and special keys, punctuation keys, functional keys to perform specific. The keyboards contain 101 keys or 104 keys. The keyboard detects the key pressed and generates the corresponding ASCII codes which can be recognized by the computer.
Types of keyboard
1.Standard keyboard
The standard keyboards have their basic layout. The average number of keys on a regular keyboard is 105/108; QWERTY keyboards are the most common and have the six alphabets Q, W, E, R, T, and Y in the first row.
2. Ergonomics
It refers to study of method that can reduce stress on muscles to avoid repetitive strain injury. It mostly deals with optimizing posture and technique while working, so the work can be carried out in the easiest manner.
3. Ergonomics
It is a keyboard that does not need to connect to the computer via a wire. This makes very convenient for the use the keyboard comfortably. Wireless keyboard use Bluetooth, Infrared (IR) to connect to the computer.
4. Virtual keyboard
It is a software device that led to use input data just like hardware keyboard. They open up as an application and can be controlled by a mouse or wire touch screen.
5. Compact keyboard
These keyboards are slim and usually do not have the numerical keypad that is present on the right side of the keyboard these are typically used in laptops.
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