Bad question cannot really be properly answered.
Is a USB HID a single type of input device or more than one ?
Is stuff like barcode scanners counted as an input device ?
Is a wacom tablet counted as a type of mouse or not ?
keyboard / mouse / joystick are probably the main ones
Keyboard
The Keyboard is an Input Device. It is used to enter text and utilise commands. It is a peripheral.
A computer mouse does not use any input, it IS an input device.
Input, Output & Storage Devices
It is an input device.
it is an input device
The full form of MICR is Magnetis Ink Character Reader.
It is an input device. Just as a scanner would be an input device to a computer.
it is input
Web-cams are input devices.
A scanner is an input device because it sends (or 'inputs') information to the computer.
mouse is an input device