数字59～00自动递减循环显示的梯形图设计

Design on Figure 59～00 Auto-regressive Cycle of the Ladder-shaped Diagram

本文简要介绍了LED的外形和显示数字的字形，以数字59～00自动递减循环显示为例，重点阐述了梯形图的设计思路和设计方法，并列出一些扩展设计题目。

This text has introduced the appearance of LED and shape of the figure briefly,take figure 59 - 00 auto - regressive cycle as an example,have explained the design ideas and method of ladder- shaped picture especially and have listed some expanding design programs.