Flow charts explained with diagrams. (terminator/process/decision box/data/connector)

Flow charts

You can use flow chart to help design a program. A flow chart is a diagram that shows how a program works and the routes can be taken through it.

A flow chat shows where the program starts and where decisions are taken. Processing operations, inputs, and outputs.

Process – Used to represent a calculation or general processing operation carried out by the program.

Terminator – Shows where the program starts or finishes.

Decision box – used in any place where the program makes a test to decide on a choice of directions to run the next code.

Data (input/output) – Represents any part of the program that takes data in or shows prints or outputs data.


Connector – aka flow line. These lines connect other parts of the flow chat to show the routes the program can take. Flow lines usually have an arrow at one end to the show the direction the program takes. If there is no arrow the direction will be either downwards or to the right.

The components of a flow chart
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