| Communication Type | What was it? | When was it used? | What did it replace? | What replaced it? |
The Pony Express
| The Pony Express consisted of relays of men riding horses carrying saddlebags of mail across a 2000-mile trail | From 1860 to 1861 | Telegraph | |
Morse Code
| The information transmitted trough wires of a telegraph was sent as a Short (dots) and Long (dash) | 1836/1851 | The pony express | |
Semaphore
| Semaphore is a visual method of communication with different colored flags . | 1790 | ||
ASCII
|
Monday, 12 January 2015
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