SYSTEM FLOW CHART SYMBOLS
Often System flow chart symbols are
confused with program flow chart symbols. There is a big difference between
these two types.
System Flow Chart : This is the
chart which is used to display how the "system" works on the whole.
For
instance, the procedure of withdrawing cash from the ATM (Automated
Teller Machine) should be displayed
using a system flow chart. It basically shows how the inputs and
outputs are working and where data is being
stored. Either in a document or on a disk. Such main details should
be displayed with the aid of a system flow
chart.
Program Flow Chart : This is the
flow chart which displays the flow of the program inside the
software which
has been written. It shows what type of data is accepted or
displayed, how the program control flows between
the various entities of the algorithm.
See Program Flow Chart for more
details.
SYMBOL DESCRIPTION
|
Action or Process |
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Input or Output Device (word inside the box) |
| |
Annotation |
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Document (if saving onto) |
| Tape | |
| |
Data Flow |
| |
|
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Disk Storage |
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Online Storage |
| |
Communication Link ( by default 2 ways, unless indicated ) |
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