电信专业英英词典C-4_电脑电信

　compatible - when one object can be used interchangeably with another.

　composite baseband - the unclamped and unfiltered output of the satellite receiver's demodulator circuit. it contains all of the video information as well as all transmitted subcarriers, such as the color subcarrier.

　compression - this occurs when information is reduced in size but all of the necessary information is retained.

　compression ratio - this is the ratio of the original size of data that is sent to the compressed size.

　computer network - see network.

　configuration - this is the software or hardware arrangements that define a computer (or telecom system) and determine what actions will be carried out (and how).

　connected - this means you are online.

　connect speed - modem speed in bps.

　connection - a electrical pathway between telephones or similar devices.

　control channel - with a cellular telephone system there are a few channels that allow the base stations to transmit information to the cell phones in its area.

　conus - this stands for contiguous united states.

　copyright - this protects an author's work from being directly copied by another.

　country code - this is the standardized code that designates a certain country.

　coverage area - a geographical area that is defined by the coverage of a particular satellite.

　cps - see characters per second.

　crash - this is the complete failure of software or hardware operation. the only available option is to restart from an initial condition.

　crc - see cyclic redundancy check.

　cross modulation - a form of distortion in which modulation from one or more carriers' signals is imposed on another carrier's signal.

　crt - this stands for cathode ray tub, and is a glass device used in video displays (e.g. televisions).

　c/t - carrier-to-noise-temperature ratio.

　ctrl - this is the abbreviation for the control key-command.

　cts - see clear to send.

　cursor - this is the particular marker that points out the next place the text will next appear on your screen.

　cyclic redundancy check (crc) - this is a common process that is used to validate the integrity of a block of data.