Technological System Flashcards
What is a system
In technology, system is a group of parts, mechanisms, devices or machines that are assembled to perform task.
What are the characteristics of a system
Elements that describe the system Overall function Controls Inputs Processes Outputs
What is the overall function
Describes what a system needs to do
What is the controls
Manage or change what happens in a system
Type of controls
Mechanical (gears in a bike)
Electronic (keys on keyboard/buttons on remote control)
Optical (screen/automatic openers)
What are inputs
Elements that go into a system to help it function
Type of inputs (categories)
People (workers, suppliers, etc.)
Equipement (saws, trucks, trolleys, etc)
Information (knowledge, instructions, etc.)
Energy (muscle power, fuel, electricity, etc)
Material (wooden boards, fabric, nails, etc)
Capital (money, buildings, land, etc)
Time (production or management time, etc)
What are processes
A series of actions that a system must do to inputs to fulfill its role
What are outputs
Elements that leave the system once the processes are complete
Rarely has one output
Desirable = result
Undesirable = waste
What are components of a system
Components of a system are different elements (like parts, mechanisms, devices or machines) that make up a system
System —> subsystem —> parts
What are subsystems
Systems can be broken down into smaller components called subsystems. These subsystems can then be separated into parts which are indivisible
What is a manufacturing process sheet
It describes all steps needed to be followed to create every part of a technical object
Lists the equipment, materials and time needed to complete each step
One is needed to construct each part of a technical object (multiple needed for full)
What is a mass production
When something is created in very large quantities
To be able to mass produce technical objects, manufacturing process sheets are essential
Describe the header of a manufacturing process sheet
Header contains general information about the part being made
Techniques to make object (categories)
Measuring and marking Machining and forming Finishing Assembling Disassembling
Description of Measuring and Marking (MPS)
Materials need to be measured carefully/precise and the cut lines need to be marked = crucial
Each measurement marked with three points
Description of Machining and Forming (MPS)
Parts are cut using tools (machining) or are folded to give them the needed shape (forming) Protect surface (cutting mat/cardboard) and appropriate tools and techniques
Description of Finishing (MPS)
Once all parts are the right size and shape, they can then be finished - smoothed
Description of Assembly (MPS)
Use appropriate links
Glue, nails and soldering = permanent
Screws or bolts = non-permanent
Description of Disassembling
Object may need to be partially or completely disassembled to transport or store
Disassemble object section by section
Stored in backs and labelled
What is energy
Capacity to produce change
Describes an object’s ability to produce movement , release heat or emit rays
Type of Energies (Useful)
Mechanical
Thermal
Luminous
Electrical
Description of Mechanical Energy
Comes from the motion of an object or it’s position in space
To create motion or work because of motion
Description of thermal energy
Comes from agitation of particles in matter
Through combustion (chemical process, reaction with oxygen)
Can be transformed or used directly
