Mouse & scanner

Mouse :-

The mouse is the device that controls cursor movement on the screen as it is moved over a flat surface. It usually contains one or three buttons. When the users presses one of the buttons, the mouse either makes a place on the screen or makes selections from data on the screen. 

The mouse is a cursor control device or graphical input device, which can control the cursor or the computer to any desired position on the screen of the computer. It allows operations of various function available on the computer screen. 

SCANNER:- 

The scanner is a device for the purpose of scanning of the required data or figure or picture.