A flow chart is the graphical representation of an algorithm. Also it is possible to be said that it is the representation detailed in graphical form of how the passages must be made in the computer to produce results.It is graphical representation occurs when several symbols (that indicate different processes in the computer), are related to each other by means of lines that indicate the order in that the processes are due to execute. The used symbols have been standardized by the North American institute of normalization (ANSI).
Recommendations for the design of Flow charts.

· Lines of horizontal and/or vertical flow are due to only use.· The crossing of lines is due to avoid using the connectors. Connectors are due to use single when it is necessary.· They do not have to be left lines of flow without connecting.· The symbols so that they are possible to be read of above towards down and of left to right are due to draw up. - All text written within a symbol will have to be written clearly, avoiding the use of many words. Pseudocodigo.· Mixture of programming language and Spanish (or English or any other language) that are used, within the structured programming, to make the design of a program. En esencial, el pseudocodigo se puede definir como un lenguaje de especificaciones de algoritmos. It is the narrative representation of the steps that must follow an algorithm to give solution to a certain problem. The pseudocode uses words that indicate the process to make.
Structured diagrams (Nassi-Schneiderman).
· Structured diagram N-S also known as diagram of chapín is like a flow chart in which the union arrows are omitted and the boxes are contiguous. The successive actions can be written in successive boxes and like in the flow charts , different actions in a box can be written.