用VHDL语言设计实现一个彩灯控制（8个发光二极管）电路，仿真并下载验证其功能。彩灯有两种工作模式，可通过拨码开关或按键进行切换。

?　　单点移动模式：一个点在8个发光二极管上来回的亮。

?　　幕布式：从中间两个点，同时向两边依次点亮直至全亮， 然后再向中间点灭，依次往复。

-VHDL Language Design and Implementation with a lantern control (8 LEDs) circuit, simulation and download verify its functionality. Carnival has two operating modes, DIP switch or by switching keys. ? Single Mobile Model: a point in eight bright LEDs on the back and forth. ? curtain-style: from the middle of two points, while both sides were lit up to full brightness and then to the mid-point off, and then click back and forth.