Basic of computer

        

                     💻🖥️🖥️🖥️🖥️

   Computer -Input Device

# Keyboard ⌨️

# Mouse 

# Joystick 🕹️

# Light pen 🖋️🖊️🖋️

# Track Ball 

# Scanner

#  Graphic tablet

# Microphone 🎤🎙️

#  Magnetic Inc Card Reader ( MICR )

# Optical Character Reader ( OCR )

# Bar Code Reader

# Optical Mark Reader (OMR)

                        Keyboard

It is the most common and very popular input device which helps to input data to the computer.

Keyboard are of two sizes 84 keys or 101/102 keys , but now keyboard with 104 keys or 108 keys are also available for windows and internet.

                        Joystick

 It is also a pointing device which is used to move the cursor position on a monitor screen. It is a stick having a spherical ball at its both lower and upper ends. It mainly used in computer Aided Designing ( CAD ) and playing computer game.

                        Light pen

It is a pointing device similar to a pen.

                         Track Ball 

It is an input device that is mostly used in notebook or laptop computer.

                         Scanner

It is an input device, which works more like a photocopy machine.

                          Microphone

It is an input device to input sound that is then store in distal form.

                           Magnetic Inc Card Reader

It is generally used in bank as there are large number of cheques to be processed every day.

                           Optical Character Reader

It is input device used to read a printed text.

                           Bar Code Reader

It is the device used for reading bar code data ( data in the form of light and dark lines).

                     Optical Mark Reader

It is a special type of optical scanner used to recognise the type of mark made by pen or pencil.