Category:Message systems
From GHN
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[[Image:Message Systems Morse code in British signal exchange Somme 1916.jpg|thumb|right|A 1916 photo of British officials using Morse Code at The Battle of Somme]] | [[Image:Message Systems Morse code in British signal exchange Somme 1916.jpg|thumb|right|A 1916 photo of British officials using Morse Code at The Battle of Somme]] | ||
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| + | Includes postal services and voice mail. | ||
== Subcategories == | == Subcategories == | ||
Latest revision as of 20:54, 14 January 2013
Includes postal services and voice mail.
Subcategories
- Postal services - the services used to transmit physical objects and tangible letters across space
- Voice mail - a computer based system that allows users to exchange voice messages
Subcategories
This category has the following 2 subcategories, out of 2 total.
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Pages in category "Message systems"
The following 2 pages are in this category, out of 2 total.
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Media in category "Message systems"
This category contains only the following file.
