Description: ith the development of EDA technologies and large-scale programmable logic device CPLD/FPGA emergence of electronic systems design techniques and tools has undergone tremendous changes, through the EDA technology CPLD/FPGA programming product development, not only low-cost, short lead time, high reliability, but also may at any time in the system to modify its logic function. In this paper, VHDL language design taxi billing system to achieve the car to start, stop, pause, time billing and preset functions, by setting the tolls and the distance counting circuit count, through the design of data conversion circuits and the journey will be toll separated into four decimal decimal number, said a quick scan through the design of the circuit shows fares and tolls, highlighting its position as a hardware description language, the advantages of good readability. Through the MAX+ PLUS Ⅱ software development, debugging and optimizing the source code, download to a specific chip (MAX series of EP
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出租车计费器的FPGA实现（97〕.doc
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