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2. Pager - Wikipedia

   en.wikipedia.org/wiki/Pager

   Pager. A pager, also known as a beeper or bleeper, [1] is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknowledge, reply to, and originate messages using an internal transmitter. [2]

3. Al Gross (engineer) - Wikipedia

   en.wikipedia.org/wiki/Al_Gross_(engineer)

   Al Gross (engineer) Irving " Al " Gross ( / ɡroʊs /; February 22, 1918 – December 21, 2000) was a pioneer in mobile wireless communication. He created and patented many communications devices, specifically in relation to an early version of the walkie-talkie, [1] Citizens' Band radio, [2] the telephone pager [2] and the cordless telephone. [3]

4. Beep (sound) - Wikipedia

   en.wikipedia.org/wiki/Beep_(sound)

   Beep (sound) A beep is a short, single tone, typically high-pitched, generally made by a computer or other machine. The term has its origin in onomatopoeia. The word "beep-beep" is recorded for the noise of a car horn in 1929, and the modern usage of "beep" for a high-pitched tone is attributed to Arthur C. Clarke in 1951. [1]

5. Radio-paging code No. 1 - Wikipedia

   en.wikipedia.org/wiki/Radio-paging_code_No._1

   An NEC pager, using POCSAG coding branded for the Skyper network. Radio-paging code No. 1 (usually and hereafter called POCSAG) is an asynchronous protocol used to transmit data to pagers. Its usual designation is an acronym of the P ost O ffice C ode S tandardisation A dvisory G roup, the name of the group that developed the code under the ...

6. Memory paging - Wikipedia

   en.wikipedia.org/wiki/Memory_paging

   Memory paging. In computer operating systems, memory paging (or swapping on some Unix-like systems) is a memory management scheme by which a computer stores and retrieves data from secondary storage [a] for use in main memory. [citation needed] In this scheme, the operating system retrieves data from secondary storage in same-size blocks called ...

7. Operator messaging - Wikipedia

   en.wikipedia.org/wiki/Operator_messaging

   Operator Messaging is the term, similar to Text Messaging and Voice Messaging, applying to an answering service call center who focuses on one specific scripting style that has grown out of the alphanumeric pager history.