数据流图自动生成系统—DFD—AUTO

DATA FLOW DIAGRAMS AUTO-GENERATION SYSTEM DFD-AUTO

数据流图自动生成系统(DFD-AUTO),用系统提供的表格式编辑器输入数据流图的描述,然后由系统自动生成数据流图,并可打印输出.从数据流图自动生成的角度论述布局、布线的关键技术问题,包括数据流图的载体定义—方格结构,初始布局的对联结法,迭代布局的力矢量松驰法,以及布线、文字定位算法。

Data flow diagrams auto-generation system(DFD-AUTO),developed by computer science dept.of Jinan University,receives the description of DFD as input through the table-cditor provided and produces DFD automatically,which then can be edited and output to printer.Emphasis of this pa- per is the key problems of placement and routing algorithm,including the carrier of DFD-grid structure,pair-linking of initial placement,force-dirceted relaxation,the routing algorithm and the location of text-label algorithm.