Paging

In computer operating systems, paging is a memory management scheme by which a computer stores and retrieves data from secondary storage for use in main memory. In this scheme, the operating system retrieves data from secondary storage in same-size blocks called pages. Paging is an important part of virtual memory implementations in modern operating systems, using secondary storage to let programs exceed the size of available physical memory.

For simplicity, main memory is called "RAM" (abbreviated from "random-access memory") and secondary storage is called "disk" (a shorthand for "hard disk drive"), but the concepts do not depend on whether these terms apply literally to a specific computer system.

History

The first memory "pages" were concepts in computer architecture, regardless of whether a page moved between RAM and disk. For example, on the PDP-8, 7 of the instruction bits comprised a memory address that selected one of 128 (27) words. This zone of memory was called a "page." This use of the term is now rare.

Pager

A pager (also known as a beeper) is a wireless telecommunications device that receives and displays numeric messages and/or receives and announces 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. Pagers operate as part of a paging system which includes one or more fixed transmitters (or in the case of response pagers and two-way pagers, one or more base stations), as well as a number of pagers carried by mobile users. These systems can range from a restaurant system with a single low-power transmitter, to a nationwide system with thousands of high-power base stations.

One of the first practical paging services was launched in 1950 for physicians in the New York City area. Physicians paid $12 per month for the service and carried a 6 oz (200 g) pager that would receive phone messages within 25 mi (40 km) of a single transmitter tower. The system was manufactured by the Reevesound Company and operated by Telanswerphone. In 1960, John Francis Mitchell combined elements of Motorola's walkie-talkie and automobile radio technologies to create the first transistorized pager, and from that time, paging technology continued to advance, and pager adoption continued to expand, until the early 1990s. However, by the mid-1990s, as cellular technologies became cheaper and more widely available, advanced services began to displace paging as a commercial product. Today, pagers exist largely as niche products, finding preferential use in applications such as hospitals, public safety, and retail locations where their simplicity, high reliability, and low cost represent significant advantages.

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The Daily Item 26 Apr 2025
BARGER, Edith C., 89, Milton ....
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Take a page out of their book

The Hindu 26 Apr 2025
... a charity on the unused pages of used notebooks ....
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DAVE RAMSEY: You've got to get on the same page

The Lufkin News 26 Apr 2025
Dear Dave. My wife has run her own small business for the last three years. I try to be positive and help whenever I can, but the truth is things aren’t going very well. In fact, the business has never ....
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Dothan Eagle 26 Apr 2025
A yellow warbler grabs a snack ... .
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From The Past Pages Of Dawn: 1975: Fifty Years Ago: Defeat of Israel

Dawn 26 Apr 2025
BEIRUT. Crown Prince Fahd of Saudi Arabia declared in a newspaper interview published today [April 25] that the Arab countries can defeat Israel in any new Middle East war ... The Federal Interior Minister … presided over the … meeting ... .
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Celebrate the 2025 NFL Draft in Green Bay with our commemorative replica page

Marshfield News Herald 26 Apr 2025
To celebrate this historic occasion in the most historic football town in America, the Green Bay Press-Gazette has produced a commemorative page print from Day 1 of the draft ... The page print is ...
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Celebrate the 2025 NFL Draft in Green Bay with Journal Sentinel commemorative replica page

Milwaukee Journal Sentinel 26 Apr 2025
To celebrate this historic occasion in the most historic football town in America, the Milwaukee Journal Sentinel has produced a commemorative page print from Day 1 of the draft ... The page print is ...
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Unni Mukundan's fan club issues final warning to fan pages spreading false information about him

The Times of India 26 Apr 2025
We are tagging the concerned pages, please refrain from what you are doing with immediate effect - Team AKUMFWA.'On the work front, Unni Mukundan was last seen in 'Get Set Baby', which was directed by Vinay Govind.
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Pages of Hope in Kashmir

Kashmir Observer 26 Apr 2025
Representational Photo. By Aadil Jahangir. In Kashmir, libraries stand as unassuming heroes. These aren’t just places to borrow books ... Wi-Fi zones and smart reading rooms are popping up, blending the charm of dusty pages with the speed of modern tech ... .
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Nintendo tracks Super Mario friendships on official web page that reveals Pauline is an outcast, ...

Games Radar 26 Apr 2025
Nintendo's G-rated official site Play Nintendo lets kids know who their favorite characters are friends with and, apparently, it's not them. In particular, it seems the entire Super Mario Bros ... "TRULY PEAK CHARACTER VARIETY" ... CATEGORIES ... Ashley Bardhan.
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Clarence Page: Durbin’s departure stirs a scramble amid a new generation

Daily Freeman 26 Apr 2025
“There’ll be some changes made.”. I’m gonna change my way of livin’, and that ain’t no bluff ... Because nobody wants you when you’re old and gray ... Clarence Page is syndicated by Tribune Content Agency ... ....
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Napa Valley Register 25 Apr 2025
Rep. Mike Thompson recently visited the North Bay Regional Center in Napa to discuss threats to Medicaid funding ... .
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Napa Valley Register 25 Apr 2025
A customer gets his beard trimmed at Chateau Barber Shop ... .
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