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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One moves across a surface and the other is stationary
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One is input and the other is output
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One has two and the other has three buttons
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None of the above
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Detailed explanation-1: -With a mouse, the entire device must be moved across a surface and buttons clicked usually with just one finger. But with trackballs, the device remains stationary and a large ball is moved by moving the entire hand, or sometimes just the thumb, across it.
Detailed explanation-2: -A normal mouse relies on your hand to move a sensor over a stationary surface like a desk or mousepad. A trackball mouse relies on your fingers to move a ball over a stationary sensor.
Detailed explanation-3: -Explanation: Trackball remains stationary when we move a computer mouse on a table. A ball held by a socket in a trackball (Pointing Device) moves in two axes (Upside & Down).
Detailed explanation-4: -Whether wired or wireless, an optical mouse and laser mouse are very much alike in design but have one key difference. While optical mice use infrared LED light to bounce off surfaces to track movement, laser mice utilize an LED outside the visible spectrum and appears to have no light at all.