梯形图编辑系统的设计

:把梯形图看作一个由输入 /输出接点和接点间的连接符相互组合而成的稀疏矩阵网络 ,介绍一种基于该网络采用指针数组建立的梯形图编辑系统 ,并简单说明对梯形图编辑存储 。

Ladder diagram is looked upon as a network which is consisted of input/output junction and junction symbol .Based on the network the authors designed a new kind of edit system of ladder diagram by use of pointer array, and simply show the edit and storage of it, then combined with source program introduce the positive direction read and compile in detail.