外文翻译--公交车自动报站系统(编辑修改稿)

外文翻译--公交车自动报站系统(编辑修改稿)内容摘要：

ide more humanized more perfect service. 2. The system design of each ponent 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 at one site, use the keyboard control the system work, through the yukon voice circuits output speech information and tips, stood in several information LED digital tube display. The whole system hardware design including keyboard circuit and reset circuit, display driver circuit, display circuit, memory expansion circuit module. In order to realize the bus stops, namely in speech automatic sixfoottall。 and when voice prompt information and automatic reporting service term, while utilizing of LED dot matrix circuit Chinese displaying. This design is required to exploit the AT89C51 as the master control circuit design of chips, auxiliary circuit requirements including voice circuits, Chinese dot matrix display circuit, the power supply circuit, etc. The CPU control and control signals, pronunciation chip, output indicator light ponent. The bus station is automatically stops the car wheel design, to count the pulse Angle, will count value pared with preset value, can determine moments, attain the precise automatically stops the purpose. USES AT89C51 as main control chip, bining to foreign pulse count ISD4004 output voice pronunciation chip. System consists of pulse detection, pulse count, CPU control and control signals, pronunciation chip, output indicator light ponent. About AT89C51 chip: AT89C51 it mainly consists of for the following parts: 1 eight central processing unit (CPU), piece you in memory, the pieces (Flash RAM, 4 of 8 bits twoway addr。