外文翻譯--公交車(chē)自動(dòng)報(bào)站系統(tǒng)(參考版)
2025-05-17 07:57本頁(yè)面
【正文】 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 addressable I/O port, 1 fullduplex UART (general asynchronous receiver transmitter) serial interface, 2 16 timer/counters, multiple priority nested interrupt structure, and a piece inside oscillator and clock circuit. In AT89C51 structure, the most striking characteristics of internal contains Flash memory is, while in other aspects of the structure of the Intel corporation, the and the structure of the 8051 no much difference. Main performance: 1. With MCS 51 patible 2. 4K bytes programmable flashing memory Life expectancy: 1000 times to write/wipe cycle Data retention time: 10 years 3. All the static job: 0Hz 24Hz 4. Tertiary program memory lock 5. 128 * 8 bits inside 6. 32 programmable I/O lines 7. Two 16 timers, counter 8. Five interrupt source 9. Programmable serial c
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