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1                           Number System

















                                Your Aim

                                to learn about:

                                         Number System                   Number System Conversion
                                           Binary Addition



                 Although the  words  data and information are  often used interchangeably,  but there  is  an
                 important distinction between the two words. In the strict sense, data consists of the raw numbers
                 that computers organise to produce information.
                 From early age, you are introduced to the concept of numbers and counting. Toddlers learn at

                 an early age that they can carry two cookies, one in each hand. Kindergarteners start counting
                 by twos and fives. Invariably, you use the decimal number system. Your number system is based
                 on 10, most likely because you have 10 fingers. Let us learn more about the number system.
                  Clickipedia



                         The numerical digits, you use today, i.e, 1, 2 and 3 are based on the Hindu-Arabic
                        numeral system developed over 1000 years ago.
                         Different names for the number 0 include zero, nought, naught, nil, zilch and zip.


                     NUMBER SYSTEM

                 A number system is simply a method of counting. Many different number systems exist.
                 Consider a clock. Clocks have 24 hours, each hour composed 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.
                 The digital computer represents all kinds of data and information like audio, graphics, video,
                 text and numbers in binary form. The total number of digits used in a number system is called

                 its base or radix. Therefore, when someone says that they are working with number system of
                 radix 2, it means base 2, that is, binary number system. The base is written after the number as
                 subscript such as (512) . In this example, the number 10 is written as the subscript to express
                                         10
                 the number in decimal number system.


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