Computer number systems, Operating System

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Binary number based systems
 
Binary is a  ' base 2' number system, only two numbers exist namely '0' and '1'. Conversion from binary to base 10 is easy if the number column technique is used:

2n ......... 24  23  22 21 20
 
               16  8   4   2   1    Base 10

Example:
 
Convert 110002 to base 10

2n ......... 24  23 22  21  20
 
            16   8   4    2   1    
              
            1    1    0    0    0  = 16+8 = 2410
 
Conversion from base 10 to binary is by means of repeated division 
 
  2/24        2/12        2/6         2/3          2/1        2/0    
  rem 0       rem 0      rem 0      rem 1     rem 1
 
    =110002


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