It is also called online input device. It is a modified form of the typewriter itself. Christopher Sholes invented the QWERTY type keyboard.
MOUSE
It is a pointing device, invented by Douglas Engelbert. The mouse on which the mouse is placed and operated is called the mouse pad.
Light Pen
A light pen is used to select the object. Any graphics created with the help of Light Pen can be stored in the computer and can be improved as needed.
Joystick
It is used to play games on the computer. It is used to give input while playing the game.
Trackball
These are input devices, unlike a mouse, which has a ball at the top. In this, the ball is rotated by holding the trackball in one place.
Scanner
It is used to convert data written on paper or printed images into digital form.
Biometric
The biometric sensor consists of a reader and a scanning unit that converts the scanned information into digital form with the help of special software.
BCR
A bar code reader consists of a scanner and a decoder. The decoder converts the information available in the bar code into digits or alphabets and sends it to the computer.
MICR
Magnetic Ink Character Recognition is used in banking, where people have to work with a large number of checks.
OMR
OMR (Optical Mark Reader) is a device that checks the presence and absence of pencil or pen marks on paper. OMR is used to check the answer sheet of an exam.
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