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Computer Science (iii) Wipe the surface and keys with a for any accumulated dirt or debris.
soft cloth slightly dampened with
Too much contaminated debris can
water or a mild cleaning solution.
make mouse movement stiff. Use a
(iv) Avoid using harsh chemicals or
toothpick, a clean, lint-free cloth or
FOR ONLINE READING ONLY
excessive moisture, as they may
a cotton cloth dampened with mild
damage the keyboard.
(v) Use a keyboard cover or silicone soap and water to gently wipe the
pads and remove dirt or grime (see
skin to help protect the keyboard Figure 5.4).
from dust, dirt, and spills.
(vi) Refrain from eating or drinking
near the keyboard to prevent spills
and crumbs from getting inside (see
Figure 5.3).
Figure 5.3: Food placed near the computer
Cleaning an optical mouse
Figure 5.4: Cleaning mouse and a mouse pad
To clean an optical mouse, follow these
general steps: (iv) Clean the optical sensor: The
(i) Disconnect the mouse: Unplug the optical sensor is usually located in
optical mouse, from your computer the centre of the mouse’s bottom
or device. surface. Use a clean, lint-free cloth
(ii) Turn the mouse upside down: This or a cotton swab dampened with
allows you to access the bottom of mild soap and water to wipe the
the mouse, where the optical sensor sensor gently. (see Figure 5.5).
and pads are located. Be careful not to apply excessive
(iii) Inspect and clean the pads: Check pressure or get any liquid inside the
the pads on the bottom of the mouse mouse.
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for Secondary Schools

