Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Is it possible for a perl program to detect continuity between two pins of a RS-232 serial port or of a parallel port?

I want my program to be triggered by the closing/opening of a physical switch which can be connected to my serial or parallel port


In reply to Need to detect continuity between 2 terminals by redss

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    [ambrus]: This is different from MS Word, which was already a good editor in the pre-unicode days (in word for windows versions 2 and 6, which ran on windows 3 but also on windows 95), only it wasn't trying to solve the task of writing maths papers back then.
    [Discipulus]: ah ok, sounds reasonable; with no fear: Perl all life long
    [ambrus]: Mind you, LaTeX is currently still useful for writing math paper or snippet content without styling in such a way that the
    [ambrus]: formatting conventions of a journal or website can be quickly applied to it, and MS Office and LibreOffice has not quite solved this (although it's better for this than it used to be),
    [ambrus]: which is sort of a drawback compared to the ages of typewritten manuscripts representing content only to which the typesetter applies formatting, but that process required much more manual labor.
    [ambrus]: If you want to typeset a manuscript, you can still do much less work then in the manual typesetting ages and get good formatting.
    [ambrus]: All with only cheap modern computers and software.
    [ambrus]: Something you can have at home and your corner print shop, without a whole printing press's worth of equipment.

    How do I use this? | Other CB clients
    Other Users?
    Others rifling through the Monastery: (9)
    As of 2017-09-26 11:16 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      During the recent solar eclipse, I:









      Results (293 votes). Check out past polls.

      Notices?