there are many different types of input devices

Any machine that feed data into a computer is an input device.
An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer). Input and output devices make up the hardware interface between a computer as a scanner or 6DOF controller.Without input devices our computer will only show a black screen and we would not be able to interact with the computer. there are many different input devices such as

• Barcode reader
• Digital camera
• Gamepad
• Joystick
• Keyboard
• Microphone
• MIDI keyboard
• Mouse (pointing device)

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