Adaptive filter for noise cancellation, vhdl program.

这是基于VHDL语言编写的能够进行出租车计费的程序，该程序具有显示功能，利用出租车的速度及里程来计费-This is based on the VHDL language capable of taxi billing program, which has a display function, use a taxi speed and mileage to billing

此程序基于VHDL语言，利用CPLD来实现交通的控制功能，-This program is based on the VHDL language, the use of CPLD to implement traffic control functions,