vhdl自动售货机的设计r3gr8.doc

广西工学院 毕业设计(论文)任务书 课题名称　 基于VHDL自动售货机的设计 指导教师 教研室主任 系 主 任 2012 年 9 月 10 日 摘 要 本设计是以现场可编程逻辑器件（FPGA）为核心的自动售货机，利用QuartusⅡ软件编写verilog HDL硬件描述语言程序以实现自动售货功能。 本设计主要以程序为主，硬件方面则使用实验箱，将程序各变量端口与实验箱管脚进行相应的配置，用六开关分别代表商品价格、所投钱币价格及确认付款找零操作。当选择好商品并投币后，数码管显示所选商品价格及投入钱币价格；按下确认付款开关，数码管显示应找多少钱，蜂鸣器响，对应商品LED灯亮。若所投钱币不足所选商品价格，对应警告钱币不足的LED灯亮。 关键字：FPGA、Verilog HDL、自动售货机、Quartus Ⅱ Abstract This design is an auto-vending machine based on field programmable logic devices (FPGA) . We use QuartusⅡ to write procedure in verilog HDL which is a language to describe hardware. The procedure will realize the function of auto-vending machine. This design is mainly about procedure. For the hardware, we use experimental box. We allocate all variable quantities in the procedure to the feet in experimental box. We use six switch respectively represent commodity prices and throw money price and confirm payment change operation. When choosing good commodities and coin, digital pipe display selected commodity prices and money price. When pressing confirm payment switch, digital pipe display should find how much money, buzzer sounded, corresponding commodity LED lights. If throw money shortage selected commodity prices, corresponding warning money shortage of LED lights. Keywords: FPGA、Verilog HDL、auto-vending machine、QuartusⅡ 目 录 1、绪论………………………………………………………………………………………..5 1.1背景……………………………………………………………………………………..5 1.2 VHDL语言介绍…………………………………………………………………………5 1.2.1 VHDL语言的发展背景…………………………………………........................... 5 1.2.2 VHDL语言的基本结构……………………………………………………………6 2、自动售货机的设计…………………………………………………………………………8 2.1设计说明………………………………………………………………………………...8 2.1.1流程说明……………………………………………………………………………..8 2.1.2各模块说明…………………………………………………………………………..9 2.1.3顶层模块……………………………………………………………………………10 3、仿真时序图……………………………………………………………………………….12 3.1只选择商品不投币……………………………………………………………………12 3.2选择商品但投币不足……………………….…………………