A computer mouse is a hand-held device that detects two-dimensional motion relative to a surface and translates this into cursor movement on a display. It originally used a rolling ball but now uses optical sensors. Mice have buttons to allow selection and other elements like touch surfaces and scroll wheels. A joystick is an input device with a stick that pivots on a base and reports its angle or direction. Joysticks are commonly used to control aircraft and video games and have buttons. They are also used to control machines like cranes and vehicles as well as devices like phones.

1. My self

2. PRESENTED BY-BHANU
TO-RAM SIR

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 A computer mouse is a hand-held pointing device that
detects two-dimensional motion relative to a surface. This
motion is typically translated into the motion of a pointer on
a display, which allows a smooth control of the graphical user
interface. The first public demonstration of a mouse controlling a
computer system was in 1968. Originally wired to a computer,
many modern mice are cordless, relying on short-range radio
communication with the connected system. Mice originally used a
ball rolling on a surface to detect motion, but modern mice often
have optical sensors that have no moving parts. In addition to
moving a cursor, computer mice have one or more buttons to
allow operations such as selection of a menu item on a display.
Mice often also feature other elements, such as touch surfaces
and "wheels", which enable additional control and dimensional
input.

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 A joystick is an input device consisting of a stick that pivots on a base and reports its
angle or direction to the device it is controlling. A joystick, also known as the control
column, is the principal control device in the cockpit of many civilian and military
aircraft, either as a center stick or side-stick. It often has supplementary switches to
control various aspects of the aircraft's flight.
 Joysticks are often used to control video games, and usually have one or more push-
buttons whose state can also be read by the computer. A popular variation of the
joystick used on modern video game consoles is the analog stick. Joysticks are also
used for controlling machines such as cranes, trucks, underwater unmanned vehicles,
wheelchairs, surveillance cameras, and zero turning radius lawn mowers. Miniature
finger-operated joysticks have been adopted as input devices for smaller electronic
equipment such as mobile phones.
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