Significance of ASCII characters '*' and 'U'

Discussion in 'Homework Help' started by doggettdoggett, Feb 19, 2018.

  1. doggettdoggett

    Thread Starter New Member

    Jan 17, 2017
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    Interesting question on my assignment that asks what the significance of ASCII characters '*' and capitol 'U' and how they can be useful. We are also asked to use even parity.

    So,
    * = 10101010 with even parity bit, and;
    U = 01010101 with even parity bit.

    It seems that these two characters are compliments to each other.
    As for usefulness, is this inverted relationship somehow useful for error checking?
     
  2. nsaspook

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  3. MaxHeadRoom

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    Jul 18, 2013
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    Geez.... that takes me back to my Signal Corps days!
    Max.
     
  4. nsaspook

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    Music to sleep to.
     
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  5. bertus

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  6. philba

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    Aug 17, 2017
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    This is one of my favorites. Especially including the Pocket Protector, suspenders and beer belly.
     
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  7. JohnInTX

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    Jun 26, 2012
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    Since 'U' consists of alternating single bit 1's and 0's, it's a handy way to verify baud rate timings. Measure the bit time on a scope, take the reciprocal and there you are. Many 'auto-baud' firmware routines also want you to type a 'U' for the same reason.
    I remember 'musical printers' as well as the guys who hung an AM radio near the CPU. Different timing loops made different radiated notes.
     
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