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    Exercise

                               Something to know

                        A.  Answer the following questions:

                              1.    What is the use of Ctrl key on keyboard?

                              2.    List any two input and output devices?

                              3.    What is an icon?
                              4.    What are the steps to change desktop background?

                              5.    What is a CPU? Explain its parts.

                        B.  Fill in the blanks.

                              1.    ______________ is the first screen when we switch on the computer.
                              2.    Printer can give the output on ______________.

                              3.    ______________ provides battery backup when the electrical power fails.

                              4.    ______________ is used to move to a next new line when you finish a line.

                              5.    ______________ is a pointing device.

                        C.  Match the following:

                              1.    Input device                              a)

                              2.    UPS                                       b)

                              3.    Brain of computer                         c)

                              4.    Takes printout                            d)

                              5.    Recycle bin                               e)

                    34                         KVS DELHI REGION 2025

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