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Flow chart symbols youll notice that the flowchart has different shapes in this case there are two shapes those with rounded ends represent the start and end points of the process and rectangles are used to show the interim steps. Business process design templates ms word excel visio download these business process design templates ms word excel visio to capture the procedures that govern how your business works from technical and operational levels. Software ideas modeler is a data flow diagram software for windows in it you can create dfd using key elements manage properties of added elements customize the diagram and export it in several formats. Data flow diagram dfd provides a visual representation of the flow of information ie data within a system by drawing a data flow diagram you can tell the information provided by and delivered to someone who takes part in system processes the information needed to complete the processes and the information needed to be stored and accessed. A nassi shneiderman diagram nsd in computer programming is a graphical design representation for structured programming this type of diagram was developed in 1972 by isaac nassi and ben shneiderman who were both graduate students at suny stony brook these diagrams are also called structograms as they show a programs structures