modem
n. device which allows the transfer of data through a telephone line from one computer to another (Computers) | ||||
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Modem definition was found in categories: Computer & Internet(18) Government(2) Language, Idioms & Slang(2) Entertainment & Music(3) Business & Finance(3) Science & Technology(3) Encyclopedia(1)
Modem Definition from Computer & Internet Dictionaries & Glossaries
| FOLDOC |
modem
<hardware, communications> (Modulator/demodulator) An electronic device for converting between serial data (typically EIA-232) from a computer and an audio signal suitable for transmission over a telephone line connected to another modem. In one scheme the audio signal is composed of silence (no data) or one of two frequencies representing zero and one.
Modems are distinguished primarily by the maximum data rate they support. Data rates can range from 75 bits per second up to 56000 and beyond. Data from the user (i.e. flowing from the local terminal or computer via the modem to the telephone line) is sometimes at a lower rate than the other direction, on the assumption that the user cannot type more than a few characters per second.
Various data compression and error correction algorithms are required to support the highest speeds. Other optional features are auto-dial (auto-call) and auto-answer which allow the computer to initiate and accept calls without human intervention. Most modern modems support a number of different protocols, and two modems, when first connected, will automatically negotiate to find a common protocol (this process may be audible through the modem or computer's loudspeakers). Some modem protocols allow the two modems to renegotiate ("retrain") if the initial choice of data rate is too high and gives too many transmission errors.
A modem may either be internal (connected to the computer's bus) or external ("stand-alone", connected to one of the computer's serial ports). The actual speed of transmission in characters per second depends not just the modem-to-modem data rate, but also on the speed with which the processor can transfer data to and from the modem, the kind of compression used and whether the data is compressed by the processor or the modem, the amount of noise on the telephone line (which causes retransmissions), the serial character format (typically 8N1: one start bit, eight data bits, no parity, one stop bit).
See also acoustic coupler, adaptive answering, baud barf, Bulletin Board System, Caller ID, SoftModem, U.S. Robotics, UUCP, whalesong.
Usenet newsgroup: news:comp.dcom.modems.
(2002-05-04)
<hardware, communications> (Modulator/demodulator) An electronic device for converting between serial data (typically EIA-232) from a computer and an audio signal suitable for transmission over a telephone line connected to another modem. In one scheme the audio signal is composed of silence (no data) or one of two frequencies representing zero and one.
Modems are distinguished primarily by the maximum data rate they support. Data rates can range from 75 bits per second up to 56000 and beyond. Data from the user (i.e. flowing from the local terminal or computer via the modem to the telephone line) is sometimes at a lower rate than the other direction, on the assumption that the user cannot type more than a few characters per second.
Various data compression and error correction algorithms are required to support the highest speeds. Other optional features are auto-dial (auto-call) and auto-answer which allow the computer to initiate and accept calls without human intervention. Most modern modems support a number of different protocols, and two modems, when first connected, will automatically negotiate to find a common protocol (this process may be audible through the modem or computer's loudspeakers). Some modem protocols allow the two modems to renegotiate ("retrain") if the initial choice of data rate is too high and gives too many transmission errors.
A modem may either be internal (connected to the computer's bus) or external ("stand-alone", connected to one of the computer's serial ports). The actual speed of transmission in characters per second depends not just the modem-to-modem data rate, but also on the speed with which the processor can transfer data to and from the modem, the kind of compression used and whether the data is compressed by the processor or the modem, the amount of noise on the telephone line (which causes retransmissions), the serial character format (typically 8N1: one start bit, eight data bits, no parity, one stop bit).
See also acoustic coupler, adaptive answering, baud barf, Bulletin Board System, Caller ID, SoftModem, U.S. Robotics, UUCP, whalesong.
Usenet newsgroup: news:comp.dcom.modems.
(2002-05-04)
| Computer Abbreviations v1.5 |
MODEM
Modulator Demodulator
Modulator Demodulator
| 9300+ Computer Acronyms |
MODEM
MOdulator/DEModulator
MOdulator/DEModulator
| Glossary of the European Information Society |
Modem (MODulator-DEModulator)
Device which transforms analogous signals transmitted by telephone lines into digital signals which can be transmitted by computer and vice versa.
Device which transforms analogous signals transmitted by telephone lines into digital signals which can be transmitted by computer and vice versa.
| Uri's File.*Xten.c.ons* |
MODEM
Modulator Demodulator
Modulator Demodulator
| A Glossary of Internet & PC Terminology |
Modem
Modem comes from the 2 words Modulation & Demodulation. A Modem converts information from Analog to Digital & vice versa. Digital Information is represented in a series of 1's & 0's. Analog information varies continuously such as a sound wave. Typical when you send an E-mail, your Modem converts the digital E-mail message to analog.
Modem comes from the 2 words Modulation & Demodulation. A Modem converts information from Analog to Digital & vice versa. Digital Information is represented in a series of 1's & 0's. Analog information varies continuously such as a sound wave. Typical when you send an E-mail, your Modem converts the digital E-mail message to analog.
| Multimedia Glossary |
modem
short for modulator/demodulator, a device that lets two computers communicate with each other via the telephone lines
short for modulator/demodulator, a device that lets two computers communicate with each other via the telephone lines
| WebGuest Web Glossary |
Modem
Contraction of MOdulator-DEModulator. A modem allows computers to transmit information to each other via ordinary telephone lines.
Contraction of MOdulator-DEModulator. A modem allows computers to transmit information to each other via ordinary telephone lines.
| Jensen's Technology Glossary |
Modem
Process of converting digitized data into analog form for a carrier wave. Demodulation transforms data transmitted in analog form back into digital form for computer storage and/or processing. Modems modulate and demodulate computer data for transmission on telephone lines. Fax modems have the added capability of importing facsimiles received over phone lines directly into computer files. Cable TV modems offer transmitting speeds of over five times those of ISDN modems. The term "ricochet modem" is sometimes used to depict a wireless connection of a computer to the Internet. The product Ricochet Modem is brick-sized connector from Metricom Inc. that is a special kind of radio connector to the Internet in metropolitan areas having Ricochet's receivers for Internet connections. The early applications of the Ricochet Modem are reviewed in Mossberg (1996) . (See also ISDN , DSL , MMDS , and ADC ) Downstream (download) refers to the transmission of network datainto your computer from another computer. Upstream (upload) refers to transmission of network data out of your computer into another computer on the network. In other words, messages or data sent to you go downstream and messages or data sent by you go upstream. At the present time the fastest analog modems that convert analog phone line downloads into digital data on your computer (or vice versa for uploads) run at 56 Kbps (56,000 bits per second). Most users, however, are still using 28.8 Kbps modems. An ISDN line doubles capacity to 128 Kbps. The new DSL (Digital Subscriber Line) offered by phone companies increases this up to 6400 Kbps. However, Asymetric Digital Subscriber Line (ADsL) can go up to 6 Mbps downstream and 640 Kbps upstream. ADC Kentrix has a report discussing DSL and ASDL.
Good Morning! Today is March 19, 1997 And this is.... ---------INFORMATIONWEEK DAILY------------ The E-Mail News Service For IT Decision Makers from the editors of InformationWeek magazine * Now reaching 75,000 subscribers and growing at http://www.informationweek.com *********
_____Switched Broadband Key To Future Of E-Commerce____ Bell Atlantic chairman Ray Smith said yesterday at the Internet & Electronic Commerce Conference in New York that the success of Internet-based commerce depends on speed. He then described how his company will provide it: with high-performance "switched broadband" connections that he claims will render technology like ISDN and ADSL obsolete. "Switched broadband will obsolete everything that comes before." Smith said in his speech that Bell Atlantic's bandwidth "end game," lies with next-generation switched broadband technology currently under development and set for deployment in Philadelphia in 18 months. Switched broadband, built on unnamed technology licensed from Lucent Technologies, will offer downstream connect speed of 52 Mbps and upstream connect speed of 3 Mbps, while taking advantage of customers' existing telephone wiring. According to Smith, switched broadband is able to jump the performance hurdles posed by the final 20 yards between buildings and the fiber optic line that ends at the curb. Telephone companies like Bell Atlantic typically bury eight to 10 copper lines instead of just one when installing voice networks. Switched broadband uses devices licensed from Lucent that let data communications take advantage of those extra wires for data transmission, making high-speed connections across the copper. "[Switched broadband] turns that buried copper into gold," Smith said. --Jeff Sweat
Process of converting digitized data into analog form for a carrier wave. Demodulation transforms data transmitted in analog form back into digital form for computer storage and/or processing. Modems modulate and demodulate computer data for transmission on telephone lines. Fax modems have the added capability of importing facsimiles received over phone lines directly into computer files. Cable TV modems offer transmitting speeds of over five times those of ISDN modems. The term "ricochet modem" is sometimes used to depict a wireless connection of a computer to the Internet. The product Ricochet Modem is brick-sized connector from Metricom Inc. that is a special kind of radio connector to the Internet in metropolitan areas having Ricochet's receivers for Internet connections. The early applications of the Ricochet Modem are reviewed in Mossberg (1996) . (See also ISDN , DSL , MMDS , and ADC ) Downstream (download) refers to the transmission of network datainto your computer from another computer. Upstream (upload) refers to transmission of network data out of your computer into another computer on the network. In other words, messages or data sent to you go downstream and messages or data sent by you go upstream. At the present time the fastest analog modems that convert analog phone line downloads into digital data on your computer (or vice versa for uploads) run at 56 Kbps (56,000 bits per second). Most users, however, are still using 28.8 Kbps modems. An ISDN line doubles capacity to 128 Kbps. The new DSL (Digital Subscriber Line) offered by phone companies increases this up to 6400 Kbps. However, Asymetric Digital Subscriber Line (ADsL) can go up to 6 Mbps downstream and 640 Kbps upstream. ADC Kentrix has a report discussing DSL and ASDL.
Good Morning! Today is March 19, 1997 And this is.... ---------INFORMATIONWEEK DAILY------------ The E-Mail News Service For IT Decision Makers from the editors of InformationWeek magazine * Now reaching 75,000 subscribers and growing at http://www.informationweek.com *********
_____Switched Broadband Key To Future Of E-Commerce____ Bell Atlantic chairman Ray Smith said yesterday at the Internet & Electronic Commerce Conference in New York that the success of Internet-based commerce depends on speed. He then described how his company will provide it: with high-performance "switched broadband" connections that he claims will render technology like ISDN and ADSL obsolete. "Switched broadband will obsolete everything that comes before." Smith said in his speech that Bell Atlantic's bandwidth "end game," lies with next-generation switched broadband technology currently under development and set for deployment in Philadelphia in 18 months. Switched broadband, built on unnamed technology licensed from Lucent Technologies, will offer downstream connect speed of 52 Mbps and upstream connect speed of 3 Mbps, while taking advantage of customers' existing telephone wiring. According to Smith, switched broadband is able to jump the performance hurdles posed by the final 20 yards between buildings and the fiber optic line that ends at the curb. Telephone companies like Bell Atlantic typically bury eight to 10 copper lines instead of just one when installing voice networks. Switched broadband uses devices licensed from Lucent that let data communications take advantage of those extra wires for data transmission, making high-speed connections across the copper. "[Switched broadband] turns that buried copper into gold," Smith said. --Jeff Sweat
| Internet Glossary |
Modem
(MOdulator, DEModulator) -- A device that you connect to your computer and to a phone line, that allows the computer to talk to other computers through the phone system. Basically, modems do for computers what a telephone does for humans.
(MOdulator, DEModulator) -- A device that you connect to your computer and to a phone line, that allows the computer to talk to other computers through the phone system. Basically, modems do for computers what a telephone does for humans.
| Panda Software Glossary |
Modem
A peripheral device, also known as MOdulator DEModulator, used to transmit electronic signals (analogical and digital). It is designed to enable communication between computers or other types of IT resources. It is most often used for connecting computers to the Internet.
A peripheral device, also known as MOdulator DEModulator, used to transmit electronic signals (analogical and digital). It is designed to enable communication between computers or other types of IT resources. It is most often used for connecting computers to the Internet.
| Website design & Internet terms |
Modem
A piece of electronic equipment that converts digital signals from a computer to analogue signals so that they can be transmitted through a telephone line, at the other end another modem is required to convert the analogue back to digital for the computer. The speed of a modem is indicated by it’s Baud Rate.
A piece of electronic equipment that converts digital signals from a computer to analogue signals so that they can be transmitted through a telephone line, at the other end another modem is required to convert the analogue back to digital for the computer. The speed of a modem is indicated by it’s Baud Rate.
| Desktop Publishing Glossary |
Modem (MOdulator-DEModulator).
A device for converting digital data into audio signals and back again. Primarily used for transmitting data between computers over telephone lines.
A device for converting digital data into audio signals and back again. Primarily used for transmitting data between computers over telephone lines.
| Multimedia Glossary |
Modem
a hardware device that converts waveform (analog) data to digital.MOdulation converts analog to digital; DEModulation converts digital to analog. Hence, MODEM. Network transfer speed comparison.
a hardware device that converts waveform (analog) data to digital.MOdulation converts analog to digital; DEModulation converts digital to analog. Hence, MODEM. Network transfer speed comparison.
| INTERNET TERMS&ACRONYMSV1.0 |
MODEM
MODEM ( MOdulator-DEModulator )
A modem is used between a computer and a phone or cable line to convert the computer’s digital signal to an analog signal for the line and vice versa.
MODEM ( MOdulator-DEModulator )
A modem is used between a computer and a phone or cable line to convert the computer’s digital signal to an analog signal for the line and vice versa.
| Glossary of Electronic Music Terms |
modem
A device (modulator/demodulator) that allows computer information to be sent over a telephone line.
A device (modulator/demodulator) that allows computer information to be sent over a telephone line.
| The Internet Dictionary |
modem
(MOdulator/DEModulator). A device that allows a PC to communicate and exchange information with other modem-equipped computers via telephone lines.
(MOdulator/DEModulator). A device that allows a PC to communicate and exchange information with other modem-equipped computers via telephone lines.
| Glossary of Computer and Internet Terms |
Modem
The word modem is actually short for Modulator/Demodulator. (Man, was I excited when I first found that out.) A modem is a communications device that can either be installed internally or used externally. It allows computers to connect to each other and transfer data over telephone lines. The largest downside to modems is that they are rather slow. Because of their lackluster speeds, many multimedia capabilites such as streaming audio and video have taken awhile to catch on. This will most likely change, however, as cable and DSL modems replace the slow 28.8 and 56K modems we've been using for so long.
The word modem is actually short for Modulator/Demodulator. (Man, was I excited when I first found that out.) A modem is a communications device that can either be installed internally or used externally. It allows computers to connect to each other and transfer data over telephone lines. The largest downside to modems is that they are rather slow. Because of their lackluster speeds, many multimedia capabilites such as streaming audio and video have taken awhile to catch on. This will most likely change, however, as cable and DSL modems replace the slow 28.8 and 56K modems we've been using for so long.
Modem Definition from Government Dictionaries & Glossaries
| DOD Joint Acronyms and Abbreviations |
MODEM
modulator/demodulator
modulator/demodulator
| International Relations and Security Acronyms |
MODEM
Modulate Demodulate
Modulate Demodulate
Modem Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
modem
Noun
1. (from a combination of MOdulate and DEModulate) electronic equipment consisting of a device used to connect computers by a telephone line
(hypernym) electronic equipment
(hyponym) acoustic modem
Noun
1. (from a combination of MOdulate and DEModulate) electronic equipment consisting of a device used to connect computers by a telephone line
(hypernym) electronic equipment
(hyponym) acoustic modem
| hEnglish - advanced version |
modem
modem
n : (from a combination of modulate and demodulate) electronic equipment consisting of a device used to connect computers by a telephone line
similar words(1)
null modem
modem
n : (from a combination of modulate and demodulate) electronic equipment consisting of a device used to connect computers by a telephone line
similar words(1)
null modem
Modem Definition from Entertainment & Music Dictionaries & Glossaries
| Guitar Glossary |
Modem
A data communications device whose name derives from its function: modulator/demodulator. The modem converts digital signals from a computer to analog signals (modulation) for transmission over telephone lines, and vice versa (demodulation).
A data communications device whose name derives from its function: modulator/demodulator. The modem converts digital signals from a computer to analog signals (modulation) for transmission over telephone lines, and vice versa (demodulation).
| English to Federation-Standard Golic Vulcan |
Modem
na-sakihtilayek
na-sakihtilayek
| The DJ Glossary |
Modem
A communications device for transmitting digital data from a computer over telephone lines.
A communications device for transmitting digital data from a computer over telephone lines.
Modem Definition from Business & Finance Dictionaries & Glossaries
| NCTS Glossary v.1.0 |
MODEM
Modulator-Demodulator
Modulator-Demodulator
| Internet PR glossary |
modem
MOdulator/DEModulator; Computer hardware that enables remote computers to communicate over regular telephone lines.
MOdulator/DEModulator; Computer hardware that enables remote computers to communicate over regular telephone lines.
| Company Info: Ticker, Name, Description |
MMPT
Modem Media Inc
Exchange: Nasdaq
Provides digital interactive marketing solutions, delivered over the internet and other electronic media, which enable clients to establish, retain and manage one-to-one customer relationships.
Modem Media Inc
Exchange: Nasdaq
Provides digital interactive marketing solutions, delivered over the internet and other electronic media, which enable clients to establish, retain and manage one-to-one customer relationships.
Modem Definition from Science & Technology Dictionaries & Glossaries
| ETSI and 3GPP |
MODEM
MOdulator/DEModulator
MOdulator/DEModulator
| Telecommunication Standard Terms |
modem
Acronym for modulator/demodulator. 1. In general, a device that both modulates and demodulates signals. (188 ) 2. In computer communications, a device used for converting digital, signals into, and recovering them from, quasi-analog signals suitable for transmission over analog communications channels. Note: Many additional functions may be added to a modem to provide for customer service and control features. Synonym signal conversion equipment. 3. In FDM carrier systems, a device that converts the voice band to, and recovers it from, the first level of frequency translation.
Acronym for modulator/demodulator. 1. In general, a device that both modulates and demodulates signals. (188 ) 2. In computer communications, a device used for converting digital, signals into, and recovering them from, quasi-analog signals suitable for transmission over analog communications channels. Note: Many additional functions may be added to a modem to provide for customer service and control features. Synonym signal conversion equipment. 3. In FDM carrier systems, a device that converts the voice band to, and recovers it from, the first level of frequency translation.
| Technical English by wpv |
Modem
A device that, once connected to a telephone line, will enable you to link to the internet or to other computers.
A device that, once connected to a telephone line, will enable you to link to the internet or to other computers.
Modem Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Modem
Modem (from modulate and demodulate) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio. Experiments have even been performed in the use of modems over the medium of two cans connected by a string.
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Democratic Movement (France)
The Democratic Movement (Mouvement démocrate, MoDem) is a centrist and pro-European French political party that was founded by centrist politician François Bayrou to succeed his Union for French Democracy (UDF) and to contest the 2007 legislative election, after his strong showing in the 2007 presidential election.
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