Modem 音标拼音: [m'odəm]
调制解调器; (
MODULATOR -
DEMODULATOR
的缩写,将计算机数位和通讯模拟信号相互转换的机器)
调制解调器; (
MODULATOR -
DEMODULATOR 的缩写,将计算机数位和通讯模拟信号相互转换的机器)
modem 数据机;调复机
M modem 数据机
modem n 1 : (
from a combination of MOdulate and DEModulate )
electronic equipment consisting of a device used to connect computers by a telephone line modulator -
demodulator \
mod "
u *
la `
tor -
de `
mod "
u *
la `
tor \,
n .
An electronic device that converts electronic signals into sound waves ,
and sound waves into electronic signals ,
used to transmit information between computers by the use of ordinary telephone lines ;
usually called a {
modem }.
[
PJC ]
modem \
mo "
dem \ (
m [=
o ]"
d [
e ^]
m ),
n . [
by shortening from modulator -
demodulator .]
An electronic device that converts electronic signals into sound waves ,
and sound waves into electronic signals ,
used to transmit information between computers by the use of ordinary telephone lines ;
also called {
modulator -
demodulator };
as ,
the latest modems can transmit data at 56 ,
000 baud over a clear telephone line .
The speed of transmission of information by a modem is usually measured in units of {
baud },
equivalent to bits per second .
[
PJC ]
(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 )
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
Motorola SURFboard SB5101 Cable Modem PREMOD HAXORWARE (Gar - JLA FORUMS Motorola Surboard SB5101 Cable Modem Premoded with Haxorware with version 1 1 rev39 with power brick A 10 Pin Header installed soldered on board, so you can access to jtag or flash any other firmware in the future The latest haxorware 1 1 rev39 firmware installed which is the magician of this cable modem Power Supply and ethernet cable are
DOWNLOAD Amigo AMI-2019F 2019C Modem Drivers - JLA FORUMS DOWNLOADS - Click DOWNLOAD to download the drivers for this modem for Windows 98, ME, 2000, XP and Linux
USB modem UMTS Huawei E160 156G - JLA FORUMS Linux - Gentoo - Huawei E160 156G Please provide some suggestions and or tutorials links about how to install this USB UMTS modems to work with Gentoo? Th
DOWNLOAD HP Pavilion N3310 Laptop Modem Video Sound Drivers DOWNLOADS - Click download to download the PCI Audio Modem Combo Device Exact model: Maestro3 comm ES1980 Maestro-3 Audio + ES56CVM-PI Modem HP Pavilion N33
New D-link DSL-502G DSL modem router - Sympatico, Acanac , 3 $39 99 shipping included for a New D-link DSL-502G DSL modem router (1 Ethernet + 1 usb port) - works with Sympatico, Acanac , 3web (CIA) Original d-link box with all accessory
NEW Motorola SURFboard SBG901 Wireless Cable Modem (19078) $50 - JLA FORUMS Motorolas SBG901 SURFboard Wireless Cable Modem Gateway is the perfect networking solution for the home, home office, or small business It combines an industry leading DOCSIS 2 0 cable modem, an advanced firewall, and an 802 11b g wireless access point all in a stylish enclosure for the sophisticated consumer
Need help with router default login password - JLA FORUMS GENERAL TECHNICAL SUPPORT - I have a friend with a SMC brand router modem in one unit: model 8014WG-SI I've googled all over and can't seem to find the fact
rj45 to db25 male to Sun console port - JLA FORUMS Sun - Can some one provide a wiring diagram for rj45 to db25 male to be connected to a Sun serial port a I am assuming that a null modem setup is needed to
SBS 2003, ESXi, Fax over USB to Ethernet device - JLA FORUMS I'm curious to know if anyone running SBS 2003 on ESXi (or any other hypvevisor) has successfully setup the SBS fax features using a fax modem with an USB to Ethernet device such
Cricket Tri-band Wireless Modem (Fresno-Near FSU) $25 FOR SALE - Fresno, CA - UM100C Tri-band Cricket Wireless Modem with install disc Will let go for $25 firm as is No need for the modem now as I have anothe