Difference between revisions of "The Telegraph and The Digital Revolution"
Koppadasao (talk | contribs) m (→Pulse Width Modulation Code) |
Koppadasao (talk | contribs) m (→Zero Deliminated Character Code) |
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* 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 | ||
+ | === Third Generation Computers === | ||
+ | * transistor based digital computers | ||
+ | |||
+ | === Fourth Generation Computers === | ||
+ | * integrated circuit based digital computers | ||
+ | |||
+ | === Fifth Generation Computers and Beyond === | ||
+ | |||
+ | === The Zeron === |
Revision as of 15:30, 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 ▄▄▄▄▄▄▄▄
- punctuations: PERIOD/BREAK ▄▄▄▄▄▄, COMMA ▄▄▄▄, QUESTION MARK ▄▄▄▄▄▄▄▄▄▄, EXCLAMATION MARK ▄▄▄▄▄▄▄▄▄▄
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