Some Examples of most commonly used Input Devices :
Mouse is often referred to as a handheld pointing device,Using mouse you can
copy/move/cut files,folder etc as per your needs.
Keyboard Is another input device that sends the data to computer according to the keys pressed by users.
The Purpose of Mic is to receive sound from different sources and send it to the system.
scanner is used to read or scan a hardcopy of document optically i.e paper form of document/file/image then convert it to digital signal and later store converted file to system.
Mainly used in shops,supermarkets,stores to read the barcodes stickers on products and update inventory simultaneously.