COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A stationary pointing device with a ball on its top or side.
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Pointing device that fits under the palm of your hand.
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A small, flat, rectangular pointing device that is sensitive to pressure and motion.
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None of the above
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Detailed explanation-1: -A trackball is a stationary pointing device with a ball on its top or side.
Detailed explanation-2: -A trackball is a computer cursor control device used in many laptop computer keyboards and older versions of computer mice. The device comprises a ball held by a socket containing sensors to detect a rotation of the ball about two axes–like an upside-down mouse with a ball in it.
Detailed explanation-3: -The trackball mouse isn’t as popular as it once was, it’s often called the upside down mouse because of the large ball that appears on top. You rotate the ball to move the mouse pointer.
Detailed explanation-4: -Unlike other input devices which needs movement like the mouse, a trackball is stationary and does not require much space. It can also work on most surfaces which is a great advantage compared to other input devices.