COMPUTER ARCHITECTURE
INPUTOUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following would be an ideal situation for using a tracker ball?
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When there isn’t enough space on a desk
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When a barcode needs to be scanned
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When answers to a test need to be input
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None of the above
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Explanation:
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: -The best position for mouse and trackball use is with your wrist neutral. Your wrist should not bend to tilt your hand up or out to the side. The same idea will help when you do other activities that require you to use your fingers and hands in the same way over and over. As much as you can, keep your wrists neutral.
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