Difference between revisions of "The Telegraph and The Digital Revolution"
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=== The First Computers === | === The First Computers === | ||
* wire based digital storage using PWMC | * wire based digital storage using PWMC | ||
| + | ** basically 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 === | === Zero Deliminated Character Code === | ||
* binary stream based digital storage | * binary stream based digital storage | ||
* based upon Pulse Width Modulation Code | * based upon Pulse Width Modulation Code | ||
* shift character codes switches between lower case, upper case, numbers, punctuation, and codes | * shift character codes switches between lower case, upper case, numbers, punctuation, and codes | ||
Revision as of 15:01, 5 November 2018
Contents
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
- each transmission blocks are separated by two shift characters
- 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
- basically 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
