Grade 9 Lesson 3
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MM Ayehsa Allian SchückGrade 9 Lesson 3
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MM Ayehsa Allian SchückPREPARE AND INTERPRET TECHNICAL DRAWING
Drawing is essential for communicating ideas in industry and engineering.
To make the drawings easier to understand, people use familiar symbols,
perspectives, units of measurement, notation systems, visual styles, and page
layout.
What is a Flowchart?
Flowcharts are easy to understand diagrams that show the different steps
in solving a specific problem. Easiness is the key to make flowchart more
useful in communicating how processes works, and for documenting how to
do a specific task.
When to use a Flow Chart?
Flowchart is a very simple yet powerful tool to improve productivity in both
our personal and work life. Here are some ways flowchart can be helpful:
Document a process
Present a solution
Brainstorm an idea
Design a system
Explain a decision-making process
Store information
What are the Basic Symbols of Flowchart?
A flowchart is commonly used by systems analysts to visualize the series of
processes in a business system. A flowchart is a useful tool to design an
efficient business system and to troubleshoot or improve an existing system.
A flowchart consists of elements, such as the terminator, process, sub
process, decision, arrow lines, and connectors.
1. Terminator
Start / End Terminator Symbol
A terminator is represented by a small rectangle with curved corners. A
terminator appears at the start and at the end of a flowchart. The end
terminator appears only once on a single flowchart.
2. Process
Instructions / Process Symbol
Actions
A process is represented by a rectangle. It refers to an action in a
business process. It must be described clearly and concisely. A process can
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ASIA ACADEMIC SCHOOL
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ICT Teacher
be described using a single verb noun phrase; for example, "Order Office
Supplies." The same level of detail must be kept in processes on a single
flowchart.
3. Decision
Decision Symbol
Decision
A decision is represented by a diamond. A process that can answer a
decision of "yes" or "no" requires a decision box.
4. Input and Output
Input and Output Input and Output Symbol
The Parallelogram features Input and Output, which cover such things
as materials, services, and even individuals going into or exiting the process.
5. Connector
Connector Symbol
A connector is represented by a small circle or a connector box and is
labelled using letters. A flowchart written on a single page is clearer than a
flowchart on several pages. A connector ensures that the processes are
connected logically and correctly on several pages.
6. Arrow Lines
Flow Lines Symbol
Arrow lines drawn in one direction, preferably from top to bottom, keep a
flowchart clear. Avoid arrow lines that loop because this could indicate
redundancy in the business process.
HOW TO CREATE FLOW CHART
1. Identify Tasks. You must list all the tasks in a process in chronological
order. Consider the following questions as your guide:
a. What happens next in the process?
b. Do you need to make a decision before the next step?
c. What approvals are required before you move on to the next task?
2. Organize and Document Tasks. Begin with a rounded rectangle labeled
START. From there, go through the sequences which must include every
action and decision in the intended order. Use arrows to connect them with
one another and to indicate the direction of the process flow. Decisions should
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ASIA ACADEMIC SCHOOL
Tetuan, Zamboanga City Ayesha Allian-Schuck
ICT Teacher
be directed by an arrow from the decision diamond to whatever possible
solutions are available. The arrow should also be labeled with a decision, such
as YES, or a NO. The termination of the process must be marked by a rounded
rectangle labeled FINISH or END.
3. Test. Double-check the flow to make sure that you haven’t overlooked
anything.
ICT for Digital Learners
ASIA ACADEMIC SCHOOL
Tetuan, Zamboanga City Ayesha Allian-Schuck
ICT Teacher
Other than a flowchart, there are several elements that you can still use
to represent your process flows, such as:
Schematic diagram
Layout Plan
Loop diagram
Chart
Block diagram
ICT for Digital Learners
ASIA ACADEMIC SCHOOL
Tetuan, Zamboanga City Ayesha Allian-Schuck
ICT Teacher
ICT for Digital Learners
ASIA ACADEMIC SCHOOL
Tetuan, Zamboanga City Ayesha Allian-Schuck
ICT Teacher
ICT for Digital Learners
ASIA ACADEMIC SCHOOL
Tetuan, Zamboanga City Ayesha Allian-Schuck
ICT Teacher