Recent content by WaterRain

  1. W

    One's and two's complement arithmetic in decimal and binary

    I'm not too sure either. To me, one's complement is simply the inversion of bits. While two's complement can represent negative values and work in addition/subtraction. I'm a little confused on what I wrote myself as well. Sure there's a better explanation somewhere..
  2. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    I got it. I was showing what I did earlier which resulted in my mistake :)
  3. W

    One's and two's complement arithmetic in decimal and binary

    Hi King, I'm very new to Complements as I just ask around recently - https://www.physicsforums.com/showthread.php?t=312168 Anyway, I would like to attempt on your problem. In dec, 47 - 28 = 19 In bin, 101111 011100 - 010011 and then performing the one's complement act: 1-0 = 1 1-1 = 0 1-1 =...
  4. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    Thanks DoctorBinary. I fully understand where my mistake is now. .BE = .1011 1110 regroup = .010 111 110 Oct = .276 That's why I thought we can't apply the same to the fractional part. But now I got it. Thanks to mgb_phys and mathmate as well :)
  5. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    I see. This means if converting a single hex I can use as mgb_phys suggested right? example F(hex) = 17(oct). Anything more than one hex will not work. Like FFF(hex) = 7777(oct).
  6. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    I get it now - partially. FACE = 1111 1010 1100 1110 regroup = 001 111 101 011 001 110 Oct = 175316 But for .BE, it is not possible to do likewise but to use the method you suggest 0.BE = B/16 + E/256 Is this right?
  7. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    Does this only work for a single Hex?
  8. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    I realized I made a mistake. 0.742188 should give 0.574 instead. 1. Answer is 175316.57? 2. Any quicker way to convert from Hex to Oct?
  9. W

    Converting Hexadecimal (base 16) to Octal (base 8)

    Homework Statement Convert the hexadecimal (base 16) value FACE.BE into octal (base 8), correct to 2 octal places. Homework Equations Nil The Attempt at a Solution First, I've converted the FACE.BE to decimals and I got 64206.742188 Next I change them to octal 64206(dec) =...
  10. W

    Converting Negative Numbers to Four's Complement

    How about dealing with negatives? Just treat them as positive? In my case, 4's complement of (–3042)5 4-3=1, 4-0=4, 4-4=0, 4-2=2 giving (1402)4s I'll get the answer with the method ignoring the negative.
  11. W

    Converting Negative Numbers to Four's Complement

    Sorry, should I convert (–3042)5 to a decimal or binary before I proceed?
  12. W

    Converting Negative Numbers to Four's Complement

    Thanks. I'll try again :)
  13. W

    Converting Negative Numbers to Four's Complement

    Homework Statement Represent (–3042)5 in the 4-digit 4’s complement system.Homework Equations –X = R^n – X – 1The Attempt at a Solution 5^4 – 3042 – 1 = 625 – 3042 – 1 = ? Answer should be (1402)4s
See more