Difference between revisions of "The Telegraph and The Digital Revolution"
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== The Telegraph == | == The Telegraph == | ||
=== Pulse Width Modulation Code === | === Pulse Width Modulation Code === | ||
| − | + | {| class="wikitable" align="right" | |
| − | |||
| − | |||
| − | {| class="wikitable" | ||
|- | |- | ||
| − | | А || {{dot}} || Ј || {{dot}}{{dash}}{{dot}}{{dash}} || L || {{dash}}{{dash}} | + | | А/1 || {{dot}} || Ј || {{dot}}{{dash}}{{dot}}{{dash}} || L/0 || {{dash}}{{dash}} |
|- | |- | ||
| − | | Ҩ || {{dot}}{{dash}}{{dot}} || К || {{dash}}{{dash}}{{dash}}{{dash}}{{dot}} || Ѕ || {{dot}}{{dot}}{{dot}}{{dot}}{{dot}} | + | | Ҩ || {{dot}}{{dash}}{{dot}} || К || {{dash}}{{dash}}{{dash}}{{dash}}{{dot}} || Ѕ/5 || {{dot}}{{dot}}{{dot}}{{dot}}{{dot}} |
|- | |- | ||
| − | | Б || {{dash}}{{dot}}{{dot}}{{dot}}{{dot}} || Л || {{dash}}{{dash}}{{dash}}{{dot}} || Z || {{dash}}{{dot}}{{dot}}{{dot}}{{dash}} | + | | Б/9 || {{dash}}{{dot}}{{dot}}{{dot}}{{dot}} || Л || {{dash}}{{dash}}{{dash}}{{dot}} || Z || {{dash}}{{dot}}{{dot}}{{dot}}{{dash}} |
|- | |- | ||
| − | | З || {{dash}}{{dot}}{{dash}}{{dot}}{{dash}} || Љ || {{dash}}{{dash}}{{dash}}{{dot}}{{dot}} || Т || {{dash}}{{dot}} | + | | З || {{dash}}{{dot}}{{dash}}{{dot}}{{dash}} || Љ || {{dash}}{{dash}}{{dash}}{{dot}}{{dot}} || Т/6 || {{dash}}{{dot}} |
|- | |- | ||
| Δ || {{dash}}{{dash}}{{dot}}{{dot}} || М || {{dash}}{{dash}}{{dash}} || И || {{dash}}{{dot}}{{dash}}{{dot}} | | Δ || {{dash}}{{dash}}{{dot}}{{dot}} || М || {{dash}}{{dash}}{{dash}} || И || {{dash}}{{dot}}{{dash}}{{dot}} | ||
|- | |- | ||
| − | | Е || {{dot}}{{dot}} || Н || {{dash}}{{dot}}{{dash}} || В || {{dash}}{{dash}}{{dot}}{{dot}}{{dash}} | + | | Е/2 || {{dot}}{{dot}} || Н/(!) || {{dash}}{{dot}}{{dash}} || В || {{dash}}{{dash}}{{dot}}{{dot}}{{dash}} |
|- | |- | ||
| Є || {{dot}}{{dash}}{{dot}}{{dash}}{{dot}} || Њ || {{dash}}{{dot}}{{dash}}{{dot}}{{dot}} || Ѡ || {{dot}}{{dash}}{{dash}} | | Є || {{dot}}{{dash}}{{dot}}{{dash}}{{dot}} || Њ || {{dash}}{{dot}}{{dash}}{{dot}}{{dot}} || Ѡ || {{dot}}{{dash}}{{dash}} | ||
|- | |- | ||
| − | | F || {{dot}}{{dash}} || О || {{dot}}{{dot}}{{dot}}{{dot}} || Р || {{dash}}{{dot}}{{dot}}{{dot}} | + | | F/(.) || {{dot}}{{dash}} || О/4 || {{dot}}{{dot}}{{dot}}{{dot}} || Р/8 || {{dash}}{{dot}}{{dot}}{{dot}} |
|- | |- | ||
| Г || {{dash}}{{dash}}{{dot}}{{dot}}{{dot}} || П || {{dash}}{{dash}}{{dash}}{{dash}} || Y || {{dash}}{{dash}}{{dot}}{{dash}}{{dash}} | | Г || {{dash}}{{dash}}{{dot}}{{dot}}{{dot}} || П || {{dash}}{{dash}}{{dash}}{{dash}} || Y || {{dash}}{{dash}}{{dot}}{{dash}}{{dash}} | ||
|- | |- | ||
| − | | Ƕ || {{dash}}{{dash}}{{dash}}{{dot}}{{dash}} || Ь || {{dash}}{{dash}}{{dot}} || С || {{dot}}{{dot}}{{dot}} | + | | Ƕ || {{dash}}{{dash}}{{dash}}{{dot}}{{dash}} || Ь/(?) || {{dash}}{{dash}}{{dot}} || С/3 || {{dot}}{{dot}}{{dot}} |
|- | |- | ||
| − | | І || {{dash}} || Ҍ || {{dot}}{{dash}}{{dash}}{{dot}}{{dot}} || Ҫ || {{dot}}{{dash}}{{dot}}{{dash}} | + | | І/(,) || {{dash}} || Ҍ || {{dot}}{{dash}}{{dash}}{{dot}}{{dot}} || Ҫ || {{dot}}{{dash}}{{dot}}{{dash}} |
| + | |- | ||
| + | | 7 || {{dash}}{{dot}}{{dot}} || (SHIFT) || {{dash}}{{dash}}{{dash}}{{dash}}{{dash}} || || | ||
|} | |} | ||
| − | + | ||
| − | + | The Illomi telegraph system used a pulse with modulated character code akin to [[W:Morse code|Morse code]], though the codes used are based upon letter frequency in [[Delang]]. A shift code ({{dash}}{{dash}}{{dash}}{{dash}}{{dash}}) switches between letters and numbers and punctuation, and 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<br>{{dash}}{{dash}}{{dash}}{{dash}}{{dash}} {{dash}}{{dash}}{{dash}}{{dash}}{{dash}} {{dash}}{{dot}} {{dash}}{{dot}}{{dash}} {{dash}} {{dot}}{{dot}}{{dot}}{{dot}}{{dot}} {{dash}} {{dot}}{{dot}}{{dot}}{{dot}}{{dot}} {{dot}} {{dash}}{{dot}} {{dot}}{{dot}} {{dot}}{{dot}}{{dot}}{{dot}}{{dot}} {{dash}}{{dot}} {{dash}}{{dash}}{{dash}}{{dash}}{{dash}} {{dot}} {{dot}}{{dot}} {{dot}}{{dot}}{{dot}} {{dash}}{{dash}}{{dash}}{{dash}}{{dash}} {{dash}}{{dash}}{{dash}}{{dash}}{{dash}} | |
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== The Digital Revolution == | == The Digital Revolution == | ||
Revision as of 14:42, 5 May 2019
Contents
The Telegraph
Pulse Width Modulation Code
| А/1 | ▄▄ | Ј | ▄▄▄▄▄▄▄▄▄▄▄▄ | L/0 | ▄▄▄▄▄▄▄▄ |
| Ҩ | ▄▄▄▄▄▄▄▄ | К | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Ѕ/5 | ▄▄▄▄▄▄▄▄▄▄ |
| Б/9 | ▄▄▄▄▄▄▄▄▄▄▄▄ | Л | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Z | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ |
| З | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Љ | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Т/6 | ▄▄▄▄▄▄ |
| Δ | ▄▄▄▄▄▄▄▄▄▄▄▄ | М | ▄▄▄▄▄▄▄▄▄▄▄▄ | И | ▄▄▄▄▄▄▄▄▄▄▄▄ |
| Е/2 | ▄▄▄▄ | Н/(!) | ▄▄▄▄▄▄▄▄▄▄ | В | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ |
| Є | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Њ | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Ѡ | ▄▄▄▄▄▄▄▄▄▄ |
| F/(.) | ▄▄▄▄▄▄ | О/4 | ▄▄▄▄▄▄▄▄ | Р/8 | ▄▄▄▄▄▄▄▄▄▄ |
| Г | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | П | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Y | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ |
| Ƕ | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Ь/(?) | ▄▄▄▄▄▄▄▄▄▄ | С/3 | ▄▄▄▄▄▄ |
| І/(,) | ▄▄▄▄ | Ҍ | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | Ҫ | ▄▄▄▄▄▄▄▄▄▄▄▄ |
| 7 | ▄▄▄▄▄▄▄▄ | (SHIFT) | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ |
The Illomi telegraph system used a pulse with modulated character code akin to Morse code, though the codes used are based upon letter frequency in Delang. A shift code (▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄) switches between letters and numbers and punctuation, and 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
The Digital Revolution
The First Computers
- electro-mechanical digital computers
- wire based digital internal storage using PWMC
- the digital storage was constructed using a mechanical telegraph key as output, a long coiled string, and a pickup transducer to pick up the signal
- required a refresh circuit
- no external digital storage
Second Generation Computers
- mostly electronically digital computers
- removable magnetic wire coil external storage using PWMC
- wire coil strung from one spindel to another through a magnetic read/write head
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
Third Generation Computers
- transistor based digital computers
Fourth Generation Computers
- integrated circuit based digital computers
