Secondary 5 Design & Applied Technology
Design and Applied Technology: from the design cycle and materials, through systems and control, to sustainable design, inclusive design and intellectual property — aligned with the official DAT curriculum, with DSE-style examples and quizzes.
The order below is the recommended shallow-to-deep path.
Units 單元
Tap a unit name to jump to its topics.
核心概念 Core Concepts1/1 live
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q1What are the three basic stages of the system model?
Q2What does a sensor do? Give one example.
Q3What is the fundamental difference between open-loop and closed-loop control?
Q4How does a thermostatic iron keep its temperature steady?
Q5How is the feedback path shown in a block diagram?
應用與應試 Application and Exam Skills1/1 live
⚡ Unit quiz 快測5 Qs
Answer on your own first, then reveal — wrong answers go to your wrong-answer book.
Q1What are the four broad families of manufacturing processes?
Q2Why validate with a prototype before mass production?
Q3How does the unit cost of injection moulding relate to quantity?
Q4What is the first step in answering a comparison question?
Q5What should you do first in a scenario system question?
Vocabulary book 生字簿
All terms, bilingual (printable).
A whole made of interconnected input, processing and output stages.
The stage where a system receives signals or commands from outside.
The stage that compares signals with set values and makes decisions.
The stage that produces the system's action or effect.
A component that converts physical quantities such as light, temperature or distance into electrical signals.
A mechanism that returns the actual result to the input so the controller can correct its actions.
Control that follows a preset program without checking the actual result.
Control that keeps correcting its output using sensor feedback.
A diagram using boxes and arrows to show system stages and signal flow.
Shaping material by sawing, shearing or laser cutting.
Processes that shape material into required solid forms, such as injection moulding and vacuum forming.
Processes that assemble parts into a whole, such as gluing, nailing, screwing and welding.
Finishing that improves appearance and durability, such as sanding, spray painting and electroplating.
A mass-production process injecting molten plastic into a mould to cool into shape.
The permitted deviation from a stated dimension, balancing precision against cost.
Shared criteria for weighing options, such as cost, strength and weight.
Testing a design with a quick prototype to avoid the risk of tooling straight away.
A question type set in a real situation, requiring knowledge to be applied to it.