英 文 翻 译 原 文 The bus stops system automatically 1. The bus is automatically stops the background and significance The people of car out for provides convenient service, while the bus stops directly affect the quality of the service. Traditi onal stops by the crew artificially, and in this way because of its poor and work ing in ten sity effect is too great, i n many big cities have been eliminated. In recent years, with the development of science and tech no logy progress and microcomputer tech no logy in many fields has bee n widely used. In the acoustic field, with various pronun ciatio n chip microcomputer tech no logy, can complete comb ined speech syn thesis tech no logy, makes the car stops con troller is realized for citize ns becomes possible, and thus provide a more pers on alized service. In view of the traditional bus stops system deficiency, combined with the use of public transport vehicle characteristics and practical operating environment, the desig n of a si ngle-chip microcomputer con trol bus stops system automatically. The bus stops the design of automatic device is mainly to compensate for changing the traditional voice stops device must have driver control can work backward way, pitted, automatic station broadcasts six-foot-tall service term for the public and provide more huma ni zed more perfect service. 2. The system desig n of each comp onent This system is designed hardware circuit design part: use AT89C51 as controller, through ISD4004 pronunciation chip establish speech, forming a variety of information and use the voice messages broadcast speech information and tips amplifier, and using speech,LED digital display for standing count. When the bus arrived...
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