说明：  介绍了基于FPGA的多功能计程车计价器的电路设计。该设计采用了可编程逻辑器件FPGA的ASIC设计，并基于超高速硬件描述语言VHDL在Xilinx公司的SpartanⅡ系列的2sc200PQ208-5芯片上编程实现了整个系统的控制部分，整个自动控制系统由四个模块构成：秒分频模块、控制模块、计量模块和译码显示模块。该设计不仅仅实现了显示计程车计费的功能，其多功能表现在它可以通过选择键选择显示计程车累计走的总路程和乘客乘载的时间。计时、计程、计费准确可靠，应用于实际当中有较好的实用价值和较高的可行性。
(introduced FPGA-based multifunctional taxi meter circuit design. The design using programmable logic device FPGA ASIC design, and for the super-high-speed VHDL hardware description language in the company Xilinx Spartan II Series 2 sc 200PQ208-5 chip programming of the control system as a whole, Automatic control the entire system from four modules : a seconds-frequency module, control module, metrology modules and decoding module. The design not only achieved a taxi showed Billing functions, Multifunctional its performance through its keypad revealed taxi taking the cumulative total journey of the passengers took the set time. Program, log, billing is accurate, reliable and practical application of them have good practical value and the higher the possibility.)