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The technique to represent and work with numbers is called number
                                            system. There are many types of number system. Come, I will tell you.























                              Okay


                Test Your Knowledge                                                 21 st  Century   #Critical Thinking
                                                                                        Skills
                                                                                            #Productivity & Accountability
                  Solve the following sums. Also note the time you took to solve each of them.
                  1.  345678 – 789 =                                 (Time taken to solve:         )
                  2.  567 x 55 =                                     (Time taken to solve:         )
                  3.  100 x 9 + 890 – 67 =                           (Time taken to solve:         )
                  4.  22/11 + 20 – 4 x 2 =                           (Time taken to solve:         )
                  Do you know how computer solves these sums and how much time it takes to solve it? Let's find out in this
                  chapter.



              A computer takes user data and produces information as a result. Despite the frequent interchange of
              'data' and 'information', it's crucial to distinguish between the two terms. In a strict sense, data refers to
              the raw, unorganised facts and figures that computers process to produce meaningful information.

              We learn about numbers and counting from an early age. Toddlers learn at an early age that they can
              carry two cookies, one in each hand. Kindergarteners start counting by twos and fives. Invariably, we
              use the decimal number system. Our number system is based on 10, most likely because we have
              a tendency to count using our ten fingers. Let us learn more about the number system. The digital
              computer represents all kinds of data and information, like audio, graphics, video, text, and numbers,
              in binary form.


              NUMBER SYSTEM


              A number system is a systematic way of representing numbers in terms of quantities. There are a lot
              of number systems in existence. Consider a digital clock. Digital clocks have 24 hours, each consisting
              of 60 minutes. Each minute is in turn composed of 60 seconds. When you learnt to count, you used the
              numbers, like 1, 2, 3, etc. Similarly, computers also have their own number system, known as the binary
              number system.




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