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2.    Optical Mouse: The mouse ball is replaced by a small optical sensor on the bottom side to
                                         detect the movement by sensing changes in reflected light. This detected light translates
                                         the movement into cursor movement on the screen. The main advantage of using the
                                         optical mouse is that it is less sensitive to dust and the movement is more accurate.


            3.   Touchpad Mouse: The touchpad mouse is embedded in a laptop or specially designed
               keyboards. The touchpad is sensitive to the movement of the fingers on it. This detected
               movement of the fingers moves the corresponding cursor on the screen.

            Basic Mouse Operations
            Some of the basic mouse operations are listed below:
            •  Single click: Clicking the left mouse button once is used to select an option or an object.
            •  Double click: Clicking the left mouse button twice executes or opens an object.

            •  Right click: Clicking the right mouse button once performs an additional tasks in different programs.
            •  Scroll: The mouse wheel rolls the mouse to scroll up and down on the screen.
            •  Hover: This movement is used to move the pointer over an object and remain there without clicking it. In some
              programs, it helps you to read the tooltip text.

            •  Drag and drop: When an object is selected by pressing the left mouse button and then it is moved and released at
              some other location, the motion is called the drag and drop. This operation is used to move an item or copy an object.
            •  Select: Clicking the left mouse button while holding down the Shift key helps to select a portion of the text. This may
              be done either to highlight the text or to perform some other operation on the selected block.




                    RAPID TYPING TUTOR

            Rapid typing tutor is free, open source application software for personal or corporate use. The software can be shared
            with others for free by using the original distribution package. It is designed to increase the typing speed using the
            touch typing method. There are different levels like beginners, intermediate and advanced that help you memorise the
            keys on your keyboard and thus improve your typing skills so that you have fewer errors.
            The Rapid Typing Tutor supports all keyboard layouts like QWERTY, Dvorak, Colemak, etc. and has multi-language
            interfaces like Arabic, Chinese, Dutch, Portuguese, Russian and many more that help people across the globe to master
            their typing skills in any language. Rapid Typing software is supported in all major operating systems like Windows,
            Mac, Linux and Unix.
            Download and Configure Settings in Wizard

            You can download the rapid typing software from the Internet and configure the settings as per your convenience. To
            download the software free of cost, type in: https://rapidtyping.com in the address bar of any browser window.

            After the download is complete, unzip the files in a folder and run rapidtyping.exe. It will display the following steps in
            the configuration wizard as shown below:
            Step 1:    Select Win for windows keyboard or Mac for mac keyboard.

            Step 2:   Select the keyboard type from list as Desktop.
            Step 3:   Select the layout type as 104 key (standard layout).
            Step 4:   Choose Enter key: flat and Numeric pad type (say 1), that match with your physical keyboard.



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