资料来源 : Webster's Revised Unabridged Dictionary (1913)

Morse code \Morse" code"\ (Teleg.)
   The telegraphic code, consisting of dots, dashes, and spaces,
   invented by Samuel B. Morse. The Alphabetic code which is in
   use in North America is given below. In length, or duration,
   one dash is theoretically equal to three dots; the space
   between the elements of a letter is equal to one dot; the
   interval in spaced letters, as O . ., is equal to three dots.
   There are no spaces in any letter composed wholly or in part
   of dashes.

   Note: {Alphabet} A .- H .... O . . V ...- B - . . . I .. P
         ..... W .-- C .. . J -.-. Q ..-. X .-.. D -.. K -.- R .
         .. Y .. .. E . L --- S ... Z ... . F .-. M -- T -- & .
         ... G --. N -. U ..- {Numerals} 1 .--. 4 . . . .- 7
         --.. 2 ..-.. 5 --- 8 - . . . . 3 . . . -. 6 . . . . . .
         9 -..- 0 ---- Period ..--.. Comma .-.- The
         International (Morse) code used elsewhere is the same
         as the above with the following exceptions. C -.-. L
         .-.. Q --.- Y -.-- F ..-. O --- R .-. Z --.. J .--- P
         .--. X -..- The Morse code is used chiefly with the
         electric telegraph, but is also employed in signalling
         with flags, lights, etc.

资料来源 : WordNet®

Morse code
     n : a telegraph code in which letters and numbers are
         represented by strings of dots and dashes (short and long
         signals) [syn: {Morse}, {international Morse code}]

资料来源 : Free On-Line Dictionary of Computing

Morse code
     
         A coding system invented by Samuel A. Morse,
        for use in sending character data over extremely low-quality
        pathways -- such as telegraphs and low-quality radio.  Morse
        code expresses characters as pulses of different durations.
        Short signals are called "dots" and long signals are calles
        "dashes".  The coding assigns shorter sequences to the most
        frequently used characters.
     
        American Morse code is the first and original Morse code
        {character set}.  {Character sets} adapted to other languages
        were developed later.
     
        American Morse Code:
     
         A . __        J . .          S . . .       1 . __ __ .
         B __ . . .    K __ . __      T __          2 . . __ . .
         C . .  .      L ___          U . . __      3 . . . __ .
         D __ . .      M __ __        V . . . __    4 . . . . __
         E .           N __ .         W . __ __     5 __ __ __
         F . __ .      O .  .         X . __ . .    6 . . . . . .
         G __ __ .     P . . . . .    Y . .  . .    7 __ __ . .
         H . . . .     Q . . __ .     Z . . .  .    8 __ . . . .
         I . .         R .  . .       0 ____        9 __ . . __
     
        Where . is a short pulse, __ a long pulse, ___ a very long
        pulse and ____ a extra long pulse.  There are also long and
        short spaces character-internal.  Intercharacter spaces are
        very long and interword spaces are extra long.  There is no
        standarisation in these durations, and they vary depending on
        the coder's preference and on the quality of the line.
     
        Continental Morse Code or International Morse Code is a widely
        used {de-facto standard}.  This table summarises the Western
        European usage of Continental Morse Code:
     
          A .-    G --.    M --    S ...   Y -.--   4 ....-
          B -...  H ....   N -.    T -     Z --..   5 .....
          C -.-.  I ..     O ---   U ..-   0 -----  6 -....
          D -..   J .---   P .--.  V ...-  1 .----  7 --...
          E .     K -.-    Q --.-  W .--   2 ..---  8 ---..
          F ..-.  L .-..   R .-.   X -..-  3 ...--  9 ----.
     
          A-umlaut (1)  .-.-      E-acute       ..-..
          A-acute       .--.-     N-tilde       --.--
          A-corona (11) .--.-     O-umlaut (1)  ---.
          CH (2)        ----      U-umlaut (1)  ..--
     
          Punctuation Marks:            Other Signs:
     
          period              .-.-.-    warning                      .-..-
          comma               --..--    error                        ........
          question mark       ..--..    repetition (ii ii)           .. ..
          hyphen              -....-    wait (AS)                    .-...
          colon (3)           ---...    interruption (BK)            -...-.-
          underline (4)       ..--.-    understood (VE)              ...-.
          apostrophe          .----.    transmission received (R)    .-.
          quotation mark      .-..-.    beginning of message (KA)    -.-.-
          parenthesis open (5)-.--.     end of message (AR)          .-.-.
          parenthesis (close) -.--.-    end of transmission (K) (6)  -.-
          equal sign (7)      -...-     end of transmission (KN) (8) -.--.
          plus sign           .-.-.     closing mark (SK) (9)        ...-.-
          multiplication sign -..-      closing station (CL)         -.-..-.
          fraction mark       -..-.
          separator (10)     .-..-
     
          (1) Note: 'umlaut' is also known as 'diaeresis'
          (2) Used only in German; not in Dutch.
          (3) also: 'divided by'
          (4) before and after the word to be underlined
          (5) purportedly replaced by -.--.- for both "(" and ")"
          (6) both and invitation to any station to start transmission
          (7) also used as spacing between parts of transmission
          (8) also an invitation to one station in particular to start
              transmission
          (9) connection will be closed.
          (10) in fractions, for example.
          (11) A-ring ?
     
        Where '.' is a short pulse, '-' a long one.  A '-' is three
        times as long as a '.'; character-internal spaces are as long
        as '.'s.  Intercharacter space are as long as -'s.  Spaces
        between words are as long as seven '.'s.
     
        (1996-11-23)