| 释义 |
▪ I. baud Telegr. and Computing.|bəʊd, bɔːd|
[From the name of J. M. E. Baudot (1845–1903), a French engineer, who invented a telegraph printing system (Baudot code, system).]
1. The unit of speed of telegraphic code transmission, the number of bauds being the reciprocal of the duration in seconds of the unit interval. (Freq. used in sing. with pl. sense.)
Often equivalent to 1 bit per second.
[1929Documents de la deuxième réunion du comité consultatif international des communications télégraphiques à Berlin 1929 115 L'avis que la vitesse de transmission soit exprimée par l'inverse de la valeur de l'intervalle élémentaire mesurée en secondes; que la vitesse de transmission d'un intervalle par seconde soit appelée baud, pour honorer la mémoire du grand télégraphiste Emile Baudot.] 1932P.O. Electr. Engin. Jrnl. XXV. 262/2 It has been proposed to use the duration of the ‘unit’ element to define the speed of transmission of successive signals. According to this suggestion the speed is defined as N ‘Bauds’ where the duration of the unit element is equal to 1/N seconds. 1934A. T. Starr Electr. Circuits & Wave Filters xii. 345 The most usual telegraph system of to-day is the Baudot code... The speed of the system is said to be (1/τ′) bauds: thus if the duration of an element is 1/60 sec., the speed is 60 bauds. 1954Electronic Engin. XXVI. 228/1 For speeds up to 120 bauds twelve channels..are normally grouped together. 1961Flight LXXX. 428/1 Of particular interest..is the use of..land lines to achieve high information rates of up to 3,600 bauds. 1969J. Martin Telecommunications & Computer xi. 204 The term ‘bauds’ is sometimes taken to mean ‘bits per second’. While this is true with many lines because they use two-state signaling, it is not true in general. 1977Sci. Amer. Oct. 16/1 (Advt.), It receives computer instructions at any of eight speeds from 75 to 2400 baud, half or full duplex. 1984Which Micro? Dec. 26 (Advt.), The MSX system can load and save data onto cassette at 1200 or 2400 baud.
2. Special Comb.: baud rate, a rate of transmission expressed in bauds.
1968Bell Syst. Techn. Jrnl. XLVII. 1691 When the *baud rate 1/T increases from zero, the bit rate R first increases and then decreases. 1983Jordan & Churchill Communications & Networking for IBM PC iv. 63 The baud rate being used by the Personal Computer during transmission has to match the baud rate of the receiving computer for data to be communicated properly.
▪ II. baud(e
obs. form of bawd. |