Pager is machine ke bare mein jankari
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A pager (also known as beeper) is a wireless telecommunications Device which receives alphanumeric and voice messages.
There are two types of pagers:
1. one way pager : It can only receives message.
2. Two way pager and response pager : It can also acknowledge, Reply and originate messages using an internal transmitter.
Explanation:
The first telephone pager system was patented in 1949 by Alfred J. Gross.
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