本次设计主要基于FPGA器件完成了一个IC电话计费器的设计，其能够显示用户IC的卡值余额，并能够根据用户当前的话务种类和通话时间进行扣费，并将用户的实时余额和通话时间通过4位LED七段显示器显示出来。整个设计过程采用自顶向下的分块设计方法，即将整个电话计费系统分为电话计费、计时模块和显示模块两大模块，其各模块的实现是基于QuartusⅡ9.2平台使用DE0硬件描述语言编程实现的。-This design is mainly based FPGA devices completed a telephone billing IC design, which can show the user the value of the IC card balance, and according to the user' s current traffic types and talk time for deductions, and the user' s real-time balance and talk time via 4-digit LED seven segment display display. Throughout the design process using a top-down design approach block, the entire telephone billing system will be divided into telephone billing, timekeeping module and display module into two modules, each module of its implementation is based on Quartus Ⅱ 9.2 platform using hardware descr iption DE0 language programming.