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    Hashtag

                          #Number System: Way to express quantities used for counting, comparing amounts,
                          performing calculations and representing values
                          #Byte: A group of eight bits

                          REVISIT

                       ▶   The smallest piece of data that can be recognised and used by the computer is known as a bit or a binary digit.
                       ▶   A number system is a way to express quantities used for counting, comparing amounts, performing
                         calculations and representing values.
                       ▶   A number system made up of ten symbols, 0 to 9, is known as the decimal number system.
                       ▶   A number system made up of only two symbols, 0 and 1, is known as the binary number system.
                       ▶   A number system made up of eight symbols, 0 to 7, is known as the octal number system.
                       ▶   A number system made up of sixteen symbols, 0 to 9 and A to F, is known as the hexadecimal number system.

                     1.  Tick ( ) the correct option.
                        a.  Which of the following number systems is made up of only two digits?
                            (i)  Decimal Number System                  (ii)  Binary Number System

                           (iii)  Octal Number System                   (iv)  None of these
                        b.  Of which digits is Octal Number System made up?
                            (i)  0 to 7                                 (ii)  0 to 9

                           (iii)  0 and 1                               (iv)  Both (i) & (ii)
                        c.  Which of the following is also known as the base-16 system?

                            (i)  Octal Number System                    (ii)  Decimal Number System
                           (iii)  Hexadecimal Number System             (iv)  Binary Number System
                        d.  Which of the following digits represents the ON state in the number system?

                            (i)  0                                      (ii)  1
                           (iii)  -1                                    (iv)  None of these
                        e.  The right-most digit of the number having the lowest weight is called __________ .

                            (i)  MSD                                    (ii)  LSD
                           (iii)  OSD                                   (iv)  None of these
                        f.   What is the other name for base?

                            (i)  Radix                                  (ii)  Foundation
                           (iii)  Radian                                (iv)  Both (i) & (ii)

                                                                                                      Number System   13

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