basic flowchart symbols

1. Understanding Flowcharts
Identify different kinds of technical drawings

3. Introduction to Flowcharts
●A flowchart is a visual
representation of a process.
●It helps to make complex processes
easier to understand.
●We use different shapes to
represent different steps.

4. ● All the flow charts we will be looking at begin with a Start
Point and finish with an End Point.
● Most of the boxes on a flow chart are instructions, which tell
you what to do next. These appear in rectangular boxes like
the one shown on the right:
● Sometimes a question needs to be answered to decide what
instruction should happen next. These questions are put in
decision boxes like the one on the right:

5. Why Use Flowcharts?
● Flowcharts simplify
complex tasks.
● They help everyone
understand the process
the same way.
● They make it easier to
spot mistakes or
improvements.

6. Start and Finish Points
● Every flowchart needs a clear start and
finish.
● We use an oval shape called the
Terminator for these points.
● Example: "Start" and "Finish" are written
inside ovals.

7. Input and Output
● Input is information we get to solve the
problem.
● Output is the result or information we give
out.
● We use a parallelogram to show input and
output.

8. Processes
● Processes are the actions we take to solve
the problem.
● We use a rectangle to show a process.
● Example: Making coffee involves several
processes.

9. Decisions
● Sometimes we need to make a decision
in the process.
● We ask a true or false question.
● We use a diamond shape to show
decisions.

10. Decisions

11. Arrows
● Used to cennect the steps in a flowchart,
to show the flow or sequence of the
problem solving process.

12. Drawing of a flowchart

13. Example: How to find profit or loss.

14. Example: Formating a flash drive

15. Example: Making Coffee
● Start: Ask mom how she likes her coffee.
● Input: Get the coffee ingredients.
● Process: Make the coffee.
● Decision: Does mom want milk?
● Output: Serve the coffee.
● Finish: Say "Coffee is ready!"

16. Example: Making Coffee

17. ● Create a flowchart based on the following
situation
a. Safely crossing the street.
b. Stop working on a computer and shutting it
down.
c. Steps for working out 4.72 divided by 1.18
on a calculator.
d. Playing snake and ladder.

18. Review and Practice
●Why are flowcharts useful?
●What shapes do we use for start
and finish?
●How do we show input and
output?

19. Assessment/Evaluation
● Draw a flowchart for the following situation:
● There are four types of fruits:
● Apples, Oranges, Bananas and Grapes.
● Each one you must pick two types of fruits.
● Note the following conditions:
If you pick apple, you cannot pic orange.
If you pick orange, you cannot pick banana.
If you pick grapes, you cannot pick apple.