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Hexadecimal

Discussion in 'Software Development' started by ustacp, Oct 28, 2007.

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  1. ustacp

    ustacp Thread Starter

    Joined:
    Aug 13, 2004
    Messages:
    292
    Does anyone know how to add, subtract, multiply, and divide hexadecimal numbers together or know of a good website that can show me. For example 7B + 12F. Thank you.
     
  2. lotuseclat79

    lotuseclat79

    Joined:
    Sep 12, 2003
    Messages:
    20,583
    Hi ustacp,

    Hex numbers are simply another form for presenting binary numbers with the values: 0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f representing 0-15 or all the values of binary numbers 4-bits at a time. So, your numbers 7B + 12F can be added as:

    0 7 B=0000 0111 1011
    1 2 F= 0001 0010 1111
    ------------------------------
    Total=0001 1010 1010=1aa

    where:
    0000=0
    0001=1
    0010=2
    0011=3
    0100=4
    0101=5
    0100=6
    0111=7
    1000=8
    1001=9
    1010=10=a
    1011=11=b
    1100=12=c
    1101=13=d
    1110=14=e
    1111=15=f
    for all 16 values that can be expressed in 4 bits or 2^4th power=16, i.e. the power representing the number of bits.

    -- Tom

    P.S. Any Linux system should have a calculator application available from the menu pull-down. Just double click it, set the view to scientific notation and select Hex then punch in the numbers and use the arithmetic symbols {+, -, x, ./.} to get the answers. Then there is this website I found by searching for: hex calculator here.
     
  3. Rockn

    Rockn

    Joined:
    Jul 29, 2001
    Messages:
    21,334
    Start > Run enter calc View > Scientific You can add and subtract in Hex to your hearts content.
     
  4. ustacp

    ustacp Thread Starter

    Joined:
    Aug 13, 2004
    Messages:
    292
    Thanks for the replies and helpful information. I got it all figured out now. Rockn I needed to learn how to do it without a calculator unfortunately.
     
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