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| A Joystick |
A Joystick is a pointing device used to move the cursor on the CRT screen. As the name refers, it is a stick having spherical balls at its upper and lower ends. We can move the stick in different directions like from left to right or forward or backward. The joystick performs similar functions of selecting commands of a menu which is carried out by detecting and measuring the displacement of joystick from the central position, it can also be used to choose the options of a menu oriented games.
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