Flowchart Symbols and Logic

1. What is a flowchart?

The flowchart is a means of visually presenting the flow of data through an information processing systems, the operations performed within the system and the sequence in which they are performed.

1. Describe the basic flowchart symbols for;

· Start or end of the program- The symbols for the beginging and the end of a flow chart are a circular square.

· Computational steps or processing function of a program- A solid rectangle.

· Input or output operation- A rhombus

· Decision making and branching- a kite.

· Flow line-

are arrows pointing in the intended direction.

3. With the decision making symbol (diamond) and the process symbol (rectangle), what are the rules for how many lines may enter and leave the symbol.

Only one flow line should come out from a process symbol.Only one flow line should enter a decision symbol, but two or three flow lines, one for each possible answer, should leave the decision symbol.