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    hkz's Avatar
    hkz Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 26, 2010, 02:50 AM
    why in computer 1024 bytes are equal to 1KB?
    according to the mathematical theory 1000 meters = 1 kilo meter while in computer 1024 bytes are equal to 1 kilo byte ?
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
    		  
    #2

    Sep 26, 2010, 03:45 AM
    That would be because it's based on binary (base 2) and not the more normal base 10.
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
    Computer Expert and Renaissance Man
    		  
    #3

    Sep 26, 2010, 04:42 AM

    Just to expand on Ben's answer. A computer is, when you boil it down, nothing more than a series of switches that are either on or off. The CPU reads which switches are on and off and performs actions based on that. To represent whether a switch is on or off the binary numbering system is used since this numbering system has only two digits; zero and one. So computer numbers are all based on this. To represent the number 2 in binary you use 10. To represent the number 3 its 11. Or further:
    4:100
    5: 101
    6: 111
    etc.

    Each of these switches is called a bit and 8 of then is called a byte. So everything goes in multiple of 8.
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