Pager
Pager
A Pager (pronounced: /ˈpeɪdʒər/) is a wireless telecommunications device that receives and displays alphanumeric or voice messages. The term is derived from the action of the device - "paging" someone, which is akin to calling out their name to get their attention.
History
The first telephone pager system was patented in 1949 by Alfred J. Gross. Early devices used tone and voice, while later models could deliver alphanumeric messages. The widespread use of pagers took off in the 1980s and 1990s, particularly in the healthcare industry where they became an essential tool for communication.
Usage
Pagers are primarily used in places where mobile phones are not reliable or do not have network coverage. They are commonly used in hospitals, as they do not interfere with medical equipment and can work in areas where cell phone signals may not reach.
Types of Pagers
There are several types of pagers including beeper, numeric pager, alphanumeric pager, and two-way pager. Each type has its own unique features and uses.
See Also
References
- Gross, Alfred J. "Communication system by pulses through the earth". U.S. Patent No. 2,662,634.
External links
- Medical encyclopedia article on Pager
- Wikipedia's article - Pager
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