baud
baud
B0119700 (bôd)baud
(bɔːd)baud
(bɔd)n.
| Noun | 1. |  baud - (computer science) a data transmission rate (bits/second) for modems |
| 单词 | baud | ||||||||||
| 释义 | baudbaudB0119700 (bôd)baud(bɔːd)baud(bɔd)n.
baudbaud(bôd, bōd), measure of the rate at which signals are transmitted over a telecommunications link. It is equivalent to the number of elements or pulses transmitted in one second, e.g., in computercomputer,device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator, by being able to store a computer program (so that it can repeat its operations and make logical ..... Click the link for more information. input/output, 2400 baud equals 2400 bits per second (bps) if each pulse encodes one bit (either 0 or 1). Many modemsmodem [modulator/demodulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals. ..... Click the link for more information. permit the encoding of several bits per baud. A 9600-bps modem that operates at 2400 baud sends four bits per baud by using a range of 16 tones (representing the four-bit combinations 0000 to 1111) to transmit data, and data compression can boost the effective transmission rate even higher. Because of this, the data transfer rate of a modem is measured in bits per second. baud[bȯd]baudbaud(communications, unit)A symbol is a unique state of the communication channel,distinguishable by the receiver from all other possiblestates. For example, it may be one of two voltage levels on awire for a direct digital connection or it might be the phaseor frequency of a carrier. The term "baud" was originally a unit of telegraph signallingspeed, set at one Morse code dot per second. Or, moregenerally, the reciprocal of the duration of the shortestsignalling element. It was proposed at the InternationalTelegraph Conference of 1927, and named after J.M.E. Baudot(1845-1903), the French engineer who constructed the firstsuccessful teleprinter. The UK PSTN will support a maximum rate of 600 baud but eachbaud may carry between 1 and 16 bits depending on the coding(e.g. QAM). Where data is transmitted as packets, e.g. characters, theactual "data rate" of a channel is R D / P where R is the "raw" rate in bits per second, D is the numberof data bits in a packet and P is the total number of bits ina packet (including packet overhead). The term "baud" causes much confusion and is usually bestavoided. Use "bits per second" (bps), "bytes per second" or"characters per second" (cps) if that's what you mean. baudThe signaling rate of a line, which is the number of transitions (voltage or frequency changes) that are created per second. The term has often been erroneously used to specify bits per second (bps). However, only at very low speeds is baud equal to bps; for example, 300 baud is the same as 300 bps. Beyond that, one baud can be made to represent more than one bit. For example, a V.22bis modem generates 1,200 bps at 600 baud. See baudot code, baud barf and modem.baudbaudA unit of data transmission equal to 1 bit/sec. Technically, baud is the number of times/sec that the carrier signal shifts value—e.g., a 56k bit-per-second modem actually runs at 14.4 baud, but it moves 4 bits per baud. Named after a Emile Baudot 1845-1903, a French telegraph engineer, inventor of the Baudot code, and pioneer of telecommunication.BaudBaudBAUD
baud
Synonyms for baud
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