Page 13 - TP_iPlus_V2.1_Class4
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To Sum Up

                         Storage devices are used to store data and information for future use.

                          Magnetic disk is covered with a magnetic coating.
                          An optical disc is an electronic data storage medium that uses a low-powered
                        laser beam to read and write data.

                          The Flash Drive is a small portable data storage device integrated with a USB
                        (Universal Serial Bus) connector.
                          The basic unit for measuring the memory of a computer is byte.

                          A group of 4 bits is known as a nibble.




                                                          Exercise


                                                       Section A (Objective)

                 A.  Tick () the correct option.
                    1.  Which of the following is known as the main memory of the computer?

                       a. Secondary                                                b. Read Only

                       c. Primary                                                  d. Random Access

                    2.  Which of the following is called non-volatile memory?

                       a. DRAM                                                     b. ROM

                       c. RAM                                                      d. SRAM

                    3.  How many megabytes are there in one gigabyte?

                       a. 1056                                                     b. 1032

                       c. 1024                                                     d. 1000

                    4.  A group of ......................... is called nibble.
                       a. 4 bits                                                   b. 8 bits

                       c. 2 bits                                                   d. 6 bits


                 B.  Fill in the blanks using the words given below.

                                          Hints: Optical Disc, Zettabyte, Flash Drive, Byte

                    1.  The ......................... is a small portable data storage device integrated with a USB connector.

                    2.  The basic unit of measuring the computer memory is called ..........................





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                                                                         Computers—Storage and Memory Device
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