1. No category

TECH ANALYSIS
OF A SYSTEM
WHAT IS A TECHNICAL OBJECT?
EXAMPLES OF TECHNICAL OBJECTS
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Desk
Water bottle
Car
Computer
??
??
WHAT IS A TECHNOLOGICAL
SYSTEM?
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A technical object (with several parts) which
transforms matter or energy.
Ex: A scooter transforms chemical energy
(gasoline) into kinetic energy that moves the
scooter (and the driver) forward.
COMPONENTS OF A SYSTEM
Technical systems have:
Inputs:
1.
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Everything that enters a system
Includes: matter, energy, force
A transformation process
2.
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The task the system performs (function)
Outputs:
3.
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Everything that exits a system
Includes: matter, energy
EX: THE APPLE PEELER AS A
TECHNICAL SYSTEM
What is the function of this technical system?
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Initial material
Inputs
Verification and
Control mechanisms
Energy Source
End material
Outputs
Waste and residue
What is the function of this technical system?
To peel apples.
Initial material
Inputs
Verification and
Control mechanisms
Energy Source
End material
Outputs
Waste and residue
Apples
Manual adjustment
of the apple
Muscle force
(chemical energy)
Peeled apples
Apple peels
EX: A DISHWASHER AS A
TECHNICAL SYSTEM
What is the function of this technical system?
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Initial material
Inputs
Verification and
Control mechanisms
Energy Source
End material
Outputs
Waste and residue
What is the function of this technical system?
To clean dirty dishes.
Initial material
Inputs
Verification and
Selection of an
Control mechanisms automatic wash cycle
Energy Source
Electrical energy
End material
Outputs
• Dirty dishes
• Water
• Dishwasher detergent
Waste and residue
Clean dishes
Water used, heat,
water vapour
NOW IT’S YOUR TURN….
A KETTLE
What is the function of this technical system?
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Initial material
Inputs
Verification and
Control mechanisms
Energy Source
End material
Outputs
Waste and residue
What is the function of this technical system?
To boil water.
Initial material
Verification and
Control mechanisms
Inputs
Outputs
Room temp. water
On/ off switch
Lid lever
Light to signal boiling
Graduations to measure
volume
• Whistle to signal boiling
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•
Energy Source
Electrical energy
End material
Boiling water
Waste and residue
Water vapour,
extra heat, etc
NOW IT’S YOUR TURN….
CLASSROOM PENCIL SHARPENER
What is the function of this technical system?
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Initial material
Inputs
Verification and
Control mechanisms
Energy Source
End material
Outputs
Waste and residue
What is the function of this technical system?
To sharpen a pencil.
Initial material
Verification and
Control mechanisms
Inputs
Energy Source
Outputs
End material
Waste and residue
Unsharpened pencil
• Manual adjustment of the
pencil
• The different sized holes
(to allow for the
different pencil widths)
Muscle force
(chemical energy)
Sharpened pencil
Pencil shards,
noise