A flowchart is a type of diagrams that represents an algorithm or a process, showing the steps as boxes of various kinds, and their order by connecting them with arrows. This diagrammatic representation can give a step-by-step solution to a given problem. Flowcharts are used in analyzing, designing, documenting or managing a process of a program in various fields.
Flowcharts are used in designing and documenting complex processes or programs. Like other types of diagrams, they help visualize what is going on and thereby help the viewer understand a process, and perhaps also find flaws, bottlenecks, and other less-obvious features within it. There are many different types of flowcharts, and each type has its own repertoire of boxes and notational conventions. The most common types of boxes in a flowchart are: 1- Processing step; usually called activity, and denoted as a rectangular box 2- Decision; usually denoted as a diamond. 3- Inputs and outputs; usually denoted as parallelograms.