There are standard symbols used in flowcharting. These symbols and their meaning are as shown below.
Oval : Used indicate terminal point for example START or STOP
Rectangle: Used to indicate any kind of general processing function, A= for example IET A = B + C
Parallelogram: Used to indicate input of a data to the computer or output of result (information) from the computer to the outside world.
Decision Box: Used to make comparison of value and therefore take decision based on the outcome of the comparison
Arrows: Used to indicate direction of flow and to join other flowcharts
Off page connector: Used to make exit or entry to a page
Small Circle: Used to make connections between flowchart symbols on the same page
Predefined Process: Used to represent a named process that is specified elsewhere, for example, a BASIC suborgram of function