Pictures from Google Image Search

time division multiplexing

A Dictionary of Computing | 2004 | | © A Dictionary of Computing 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

time division multiplexing (TDM) A method of sharing a transmission channel among multiple sources by allocating specific time slots to each source. Both synchronous and asynchronous TDM is used.

Synchronous TDM does not require identity bits to be included in a message since the receiving device knows which device is transmitting at all times. The two main methods used in synchronous TDM to identify when a device's time slot occurs are polling and clocking. Polling requires a central device to interrogate each sending device when its time slot occurs. Clocking requires each device to have a synchronized clock and a prearranged sending sequence known to all devices. Polling and clocking waste time slots if a device has no data to send. More refined methods require devices to reserve their time slots ahead of time or allow devices to use time slots of other devices if they were unused on the previous cycle.

Asynchronous TDM allows devices to send data as it is ready, without a prearranged ordering. Data must carry with it the identity of the sending device. Since devices may send data at the same time, collisions may occur, making the messages unreadable. Many networks that utilize asynchronous TDM use CSMA/CD (carrier sense multiple access with collision detection) to sense when messages have collided and must be retransmitted.

TDM is used in baseband networking, and may also be used on channels of a broadband networking system.

See also multiplexing, frequency division multiplexing.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

JOHN DAINTITH. "time division multiplexing." A Dictionary of Computing. 2004. Encyclopedia.com. 30 Nov. 2009 <http://www.encyclopedia.com>.

JOHN DAINTITH. "time division multiplexing." A Dictionary of Computing. 2004. Encyclopedia.com. (November 30, 2009). http://www.encyclopedia.com/doc/1O11-timedivisionmultiplexing.html

JOHN DAINTITH. "time division multiplexing." A Dictionary of Computing. 2004. Retrieved November 30, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O11-timedivisionmultiplexing.html

Learn more about citation styles

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Hawaii's top health care providers.(Illustration)
Magazine article from: Hawaii Business; 5/1/2005; 700+ words ; HAWAII'S TOP HEALTH CARE PROVIDERS Ranked by Gross Annual Sales, Hawaii Business 2004 Top 250 List COMPANY PHONE WEB SITE...808) 432-4988 www.kaiser permanente.org/ hawaii 2 HAWAII 55 Merchant St. (808) 535-7401 PACIFIC...
Hawaii 2050 Sustainability Plan Sets Direction for State's Future.
PR Newswire; 2/11/2008; 700+ words ; ...input of thousands of citizens HONOLULU, Hawaii, Feb. 11 /PRNewswire/ -- The Hawaii 2050 Sustainability Task Force today released...term sustainable future of our islands. The Hawaii 2050 Sustainability Plan provides a map for...
Hawaii.com Revamps Its Loyalty Program, Offering Great Perks for Members.
PR Newswire; 2/26/2009; 700+ words ; HONOLULU, Feb. 26 /PRNewswire/ -- Since Hawaii.com was established in 2002, it has offered...who join the site's free loyalty program, the Hawaii.com Club. For years, Hawaii.com has offered Club members the opportunity...
Hawaii's top health care providers: ranked by Gross Annual Sales, Hawaii Business 2005 Top 250 List.
Magazine article from: Hawaii Business; 4/1/2006; 700+ words ; HAWAII'S TOP HEALTH CARE PROVIDERS Ranked by Gross Annual Sales, Hawaii Business 2005 Top 250 List COMPANY PHONE WEB SITE...808) 432-4988 www.kaiserpermanente.org/ hawaii 2 HAWAII PACIFIC HEALTH 55 Merchant St. (808) 535...
Hawaii Best-Sellers
Newspaper article from: Honolulu Star - Bulletin; 8/3/2003; ; 700+ words ; ...titles was compiled using figures from the Hawaii Book Publishers Association and Bookline distributors, and reflects sales by Hawaii-based publishers. Numbers in parentheses...Trading (9) 10. "Golden Children of Hawaii Cut-Out Dolls," Yuko Green, Island...
Hawaii's small-college volleyball still top-notch
Newspaper article from: Honolulu Star - Bulletin; 8/28/1996; ; 700+ words ; face=+2; BYU-Hawaii (35-1)face=-2; face=+Bold; August - 30:face=-Bold; at Hawaiian Style Classic (Hawaii-Hilo, BYU-Hawaii, Hawaii Pacific, Chaminade, Humboldt State, Dowling College...
Hawaii? Book it now, Danno; Frank Barrett was never a fan of the classic cop show . . . but finds the Pacific haunts of McGarrett & Co utterly enchanting in real life.
Newspaper article from: The Mail on Sunday (London, England); 8/20/2000; 700+ words ; Byline: FRANK BARRETT HAWAII Five-O still, incredibly, ranks...existed. But I yearned to visit anyway. Hawaii is one of those foreign places that...lot of useless information). It was Hawaii that inspired Joni Mitchell's Big...
Hawaii Grads Can Lock in Record-Low Student-Loan Interest Rates; SMS Hawaii Offers Federal Consolidation Loans.
PR Newswire; 7/2/2002; 699 words ; ...financed their higher education. SMS Hawaii(R), the nonprofit student-loan secondary market for Hawaii, reports that student-loan interest...Federal Consolidation loan through SMS Hawaii, borrowers can lock in the lowest interest...
Hawaii Helicopter Tours From BestOnHawaii.com Offer Stunning Sights of the Aloha State.
News Wire article from: Internet Wire; 4/9/2009; 700+ words ; ...corner, and BestOnHawaii.com, the leading Hawaii Tours and Activities Center, has the top Hawaii helicopter tours for any Hawaiian vacation...islands, including Maui, Molokai, Big Island Hawaii, Kauai and Oahu." Hawaii helicopter tours...
How Hawaii built $150 mm TIGR film industry: a talk with Brad Bate.(Targeted Industries Growth Report)
Magazine article from: Hawaii Business; 10/1/2003; 700+ words ; Hawaii film anti television industry hit record...here in 1913, really took off in 1968 with Hawaii 5-O, has since established itself as...writer. Bate did concept and development of Hawaii Film Office media kit, some text for website...

Related entries from encyclopedias, dictionaries, and thesauruses

Hawaii
Encyclopedia entry from: Worldmark Encyclopedia of the States Hawaii State of Hawaii ORIGIN OF STATE NAME: Unknown. The name may stem from Hawaii Loa, traditional discoverer of the islands, or from Hawaiki, the traditional Polynesian homeland. NICKNAME: The Aloha State. CAPITAL: Honolulu. ENTERED...
Bank of Hawaii Corporation
Book article from: International Directory of Company Histories Bank of Hawaii Corporation 130 Merchant Street Honolulu, Hawaii 96813 U.S.A. Telephone: (808) 537-8430 Toll...www.boh.com Public Company Incorporated: 1971 as Hawaii Bancorporation, Inc. Employees: 2,600 Total Assets...
International Affairs: Hawaii and the Spanish-American War
Book article from: American Eras International Affairs: Hawaii and the Spanish-American War Naval...affairs in Latin America and the Pacific. Hawaii. The New Navy enabled the United States...constitution. Since 1875 sugar planters in Hawaii had been protected by an arrangement...
Amfac/JMB Hawaii L.L.C.
Book article from: International Directory of Company Histories Amfac/JMB Hawaii L.L.C. 900 North Michigan Avenue...exclusively Hawaiian in activity, Amfac/ 1MB Hawaii L.L.C. is a subsidiary ofNorthbrook...Hawaiian islands of Oahu, Maui, Kauai, and Hawaii. Among its real estate ventures are several...
Canada–France–Hawaii Telescope
Book article from: A Dictionary of Astronomy Canada–France–Hawaii Telescope A 3.6-m reflector at an altitude of 4200 m on Mauna Kea, Hawaii, opened in 1979. It is jointly owned...Canada, France, and the University of Hawaii through the Canada–France...

Find thousands of answers for hundreds of subjects at Smart QandA .

All answers verified by trusted sources at Encyclopedia.com

Try Smart QandA now!

For students and teachers!

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including:

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including: