Difference between revisions of "The Telegraph and The Digital Revolution"

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=== Pulse Width Modulation Code ===
 
=== Pulse Width Modulation Code ===
 
* akin to [[W:Morse code|Morse code]]
 
* akin to [[W:Morse code|Morse code]]
−
** based upon letter frequency in [[Delang]]
+
* based upon letter frequency in [[Delang]]
−
** a shift character code switches between letters and numbers and punctuation
+
* a shift character code switches between letters and numbers and punctuation
−
*** each transmission blocks are separated by two shift characters
+
** each transmission blocks are separated by two shift characters
−
***:Ex: SHIFT SHIFT T H I S SPACE I S SPACE A SPACE T E S T SHIFT 1 2 3 SHIFT SHIFT
+
**:Ex: SHIFT SHIFT T H I S SPACE I S SPACE A SPACE T E S T SHIFT 1 2 3 SHIFT SHIFT
−
** numbers 1-5 is 1 to 5 dots, while 6 to 9 is one dash and 1 to 4 dots. zero is two dashes
+
* numbers 1-5 is 1 to 5 dots, while 6 to 9 is one dash and 1 to 4 dots. zero is two dashes
−
**:1 {{dot}}, 2 {{dot}}{{dot}}, 3 {{dot}}{{dot}}{{dot}}, 4 {{dot}}{{dot}}{{dot}}{{dot}}, 5 {{dot}}{{dot}}{{dot}}{{dot}}{{dot}}, 6 {{dash}}{{dot}}, 7 {{dash}}{{dot}}{{dot}}, 8 {{dash}}{{dot}}{{dot}}{{dot}}, 9 {{dash}}{{dot}}{{dot}}{{dot}}{{dot}}, 0 {{dash}}{{dash}}
+
*:1 {{dot}}, 2 {{dot}}{{dot}}, 3 {{dot}}{{dot}}{{dot}}, 4 {{dot}}{{dot}}{{dot}}{{dot}}, 5 {{dot}}{{dot}}{{dot}}{{dot}}{{dot}}, 6 {{dash}}{{dot}}, 7 {{dash}}{{dot}}{{dot}}, 8 {{dash}}{{dot}}{{dot}}{{dot}}, 9 {{dash}}{{dot}}{{dot}}{{dot}}{{dot}}, 0 {{dash}}{{dash}}
  
 
== The Digital Revolution ==
 
== The Digital Revolution ==

Revision as of 15:03, 5 November 2018

 This article is a stub.
A stub is an article which does not cover all information available about the topic.

The Telegraph

Pulse Width Modulation Code

  • akin to Morse code
  • based upon letter frequency in Delang
  • a shift character code switches between letters and numbers and punctuation
    • each transmission blocks are separated by two shift characters
      Ex: SHIFT SHIFT T H I S SPACE I S SPACE A SPACE T E S T SHIFT 1 2 3 SHIFT SHIFT
  • numbers 1-5 is 1 to 5 dots, while 6 to 9 is one dash and 1 to 4 dots. zero is two dashes
    1 ▄▄, 2 ▄▄▄▄, 3 ▄▄▄▄▄▄, 4 ▄▄▄▄▄▄▄▄, 5 ▄▄▄▄▄▄▄▄▄▄, 6 ▄▄▄▄▄▄, 7 ▄▄▄▄▄▄▄▄, 8 ▄▄▄▄▄▄▄▄▄▄, 9 ▄▄▄▄▄▄▄▄▄▄▄▄, 0 ▄▄▄▄▄▄▄▄

The Digital Revolution

The First Computers

  • wire based digital storage using PWMC
    • the digital storage was constructed using a telegraph key as output, a long coiled string, and a pickup transducer to pick up the signal
    • required a refresh circuit

Zero Deliminated Character Code

  • binary stream based digital storage
  • based upon Pulse Width Modulation Code
  • shift character codes switches between lower case, upper case, numbers, punctuation, and codes
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