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e\L-lovely-eng\comm5-1.pmd IInd 16-9-11 IIIrd 27-12-11 IVth 4-1-12

Information and Communication Technology Applications

Figure 5.4: A Mouse
Notes

Using a Mouse. You can use the mouse in following ways:
(a) Holding. You can hold the mouse with right for left hand by putting your finger on the left button
as shown in Figures 5.5 (a) and 5.5 (b).

Figure 5.5 (a) Holding Mouse with Left Hand
(b) Holding Mouse with Right Hand

(a) (b)
(b) Pointing. When you slide the mouse on the mouse pad, the pointer or arrow moves on the screen.
(c) Clicking. Gently pressing and releasing the left mouse buttons, while keeping your hand on the
mouse, is one of the ways to give a command to the computer. When you move the pointer over
text, picture and menu, the arrow pointer changes to various shapes.
(d) Double-click. Pressing mouse button twice quickly is called double-click. Sometimes you need to
double click the mouse on icon for giving some commands (e.g. opening a file).
(e) Dragging. Moving the mouse along with pressing and holding the left mouse button is called
dragging. Sometimes you need to drag the mouse (e.g. while working on graphics).

Microphone
A microphone (sound recorder) is also a basic Voice-input device of computer. It is used to store
voice data consisting of recorded message or synthesized sound using a GUI operating system such
as Windows as shown in Figure 5.6. Microphone converts sound waves into analog electrical signals,
which are further converted to digital form in a PC.

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