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Q. |
The trend in computer systems is towards the use of graphical user interfaces (GUIs). In these operating systems, a track ball is described as |
A. | a roller ball which moves the cursor. |
B. | a pen-shaped device which allows data to be entered through the CRT screen. |
C. | a figure which resembles a familiar office device. |
D. | an outdated input device. |
E. | None of these |
Answer» A. a roller ball which moves the cursor. |
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