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Un giga = 1024 Mb.

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Roberto -  
teebo Posted messages 33585 Registration date   Status Contributor Last intervention   -
Un giga = 1000 Mb.
Merci.

9 answers

  1.
    bleup Posted messages 700 Status Member 158
     
    Hi

    I'm not a computer whiz, but I think I know that:

    1024 bytes = 1 KB
    1024 KB = 1 MB
    1024 MB = 1 GB

    or if you prefer, 1 GB = 1,073,741,824 bytes
    1 MB = 1,048,576 bytes
    1 KB = 1,024 bytes

    That's it for your question. See you!
    148
  2. 440LVB
     
    And just to clarify, be careful with kb, Mb, etc. Because the English refer to bits for bits and bytes for bytes (so 1 byte = 8 bits).

    One can get tricked, for example, regarding the capacity of a memory card; if the stated capacity is 512 mega bits, that only equals 64 MB.
    31
    1. fozzie
       
      this remark seems much more judicious to me.
      0
  3. fozzie
     
    mega = 1 million
    giga = 1 billion
    so giga = 1000 mega
    24
  4. Anonymous user
     
    Hi

    yes, indeed 1 GB != 1000 MB

    actually, you multiply by 1024 each time, not by 1000.

    1 GB = 1024 MB = 1024 * 1024 KB = 1024 * 1024 * 1024 bytes.

    there you go
    16
  6. teebo Posted messages 33585 Registration date   Status Contributor Last intervention   1 797
     
    DON'T FEED THE TROLL!

    A little reading for those who speak without knowing:

    http://www.bipm.org/fr/si/ (International System)
    http://physics.nist.gov/cuu/Units/binary.html (U.S. site for official measurement prefixes)
    http://sebsauvage.net/comprendre/unites/ (explanation by sebsauvage)

    --
    It is only by not paying one's bills that one can
    hope to live in the memory of the commercial classes.
    16
  7. 440LVB
     
    Just like 1KB is not 1000 bytes, 1GB is not 1000MB

    1KB = 1024 bytes
    1MB = 1024 KB = 1024^2 bytes
    1GB = 1024 MB = 1024^3 bytes = much more than one billion bytes.

    This explains why, for example, a CD with 710,000 KB has a size of less than 700 MB.

    So why 1024? Because it is a power of 2, making it easily representable in binary (=> 2^10 or 10000000000 in base 2, unlike 1000 (01111100111 in base 2). Finally, from what I remember from my first classes on binary, maybe someone can explain it better than I can....
    12
  8. vieu bison boiteu Posted messages 44334 Registration date   Status Contributor Last intervention   Ambassadeur 3 591
     
    Hi Roberto,
    still the same problem...
    but 1000 MB does not equal 1 GB and vice versa
    the answer has already been given, but what message????
    see you later
    --
    no link on the web page in English
    I'm already flying enough on my own
    7
  10. fozzie
     
    I think the question was about an order of magnitude,
    If it's to know the capacity of a hard drive, we don't care much about the decimal.
    1000 is therefore just (approximately).
    Computing: it's all about 0s and 1s, it's in base 2, 2 to the power of 10 (or 1024) is the closest value to 1000, so ...)
    3