By markh
May 5, 2009
  1. Hi, can anyone tell me why computers use hexadecimal.

  2. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    The main reason why we use hexadecimal numbers is because it is much easier to express binary number representations in hex than it is in any other base number system. Computers do not actually work in hex, they work in bits (ones and zeros)

    Each hexadecimal digit represents four binary bits, and typically 8 bits is one Byte
    More info here:

    So instead of saying: 101101101001010001010, it is much easier to say: 16d28a in hexadecimal
    Free calculator here:

    Here's a simple graph

  3. markh

    markh TS Rookie Topic Starter

    Hi Kimsland and many thanks again for your help

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