1. System Analysis and Design
IE352
System Analysis and Design
Session V

2. System Engineering Tools
System Flow Charts
Organization Analysis
Organization/Personnel
Assessment
Engineering Management

3. System Engineering Tools
System Flow Charts

4. Flowcharts
was introduced by Frank Gilbreth to members of the American Society of Mechanical Engineers (ASME) in 1921
In the early 1930s, this tool was started to be
embedded into industrial engineering curricula
In 1947, ASME adopted a symbol set derived from Gilbreth's original work as the "ASME Standard: Operation and Flow Process Charts
Later on, adapted and used

5. System Flow Charts Processes flowcharts Work flowcharts
Computer flowcharts

6. Process Flow Chart SYMBOL NAME DESCRIPTION Oval
The start or end of a processes
Rectangular
Process or action step
Represents waiting period that is part of a process
Diamond Shape
When decision is needed, e.g.
Yes/No or True/False.

7. Process Flow Chart SYMBOL NAME DESCRIPTION
Solid Thin Arrow
Direction of the processes in sequence
Solid Line
Physical data transfer (editing, recording or writing down)
Dotted Line
Data Transfer (checking, comparing or reading)
Solid/Hollow Thick Arrow
Physical Transfer

8. Process Flow Chart SYMBOL NAME DESCRIPTION Circle Operation
Sided Rectangle
Files
Upward Triangle
Open file
Downward Triangle
Close file

9. Examples Start File 2 File 1 Receive the request Valid StampNo
Yes
Valid
Stamp
“Rejected”
Sign it
Open
Open
File it
Record it
Close
Send to
Accounting
End
Close

10. System Flow Charts Processes flowcharts Work flowcharts
Computer flowcharts

11. Flow Process Chart SYMBOL NAME DESCRIPTION Circle Operation Arrow
Movement
Diamond
Check
Delay
Downward Triangle
Storage

12. Examples

13. System Flow Charts Processes flowcharts Work flowcharts
Computer flowcharts

14. Computer Flow Chart SYMBOL NAME DESCRIPTION Oval
The start or end of a processes
Semi- rectangular
Inputs / Outputs
Rectangular
Internal processes
Diamond Shape
When decision is needed, e.g.
Yes/No or True/False.

15. Computer Flow Chart SYMBOL NAME DESCRIPTION Solid Thin Arrow
Direction of the processes in sequence
Document
Single Document
Documents
Created/Revised Copies
Bridge
Used to avoid intersections
between direction lines/arrows

16. Calculate Final = (G1+G2+G3..)
Examples
Start
Read class grade n=1
Calculate Final = (G1+G2+G3..)
No Yes
Final n
> X
Final n = “FAIL”
Final n = “PASS”
n = n+1 No
n = N
Yes
Print “Class Result”
End