GCSE D&T Unit 3 - Electronic Systems

Which of the following is NOT part of a system?

• Input
• Output
• Decision
• Reminder

A subsystem includes the tasks that happen with a system, true or false?

• true
• false

What type of diagram is used to represent systems?

• Shape Diagram
• Square Diagram
• Block Diagram

Switches are a common form of an _______ control device?

• Input
• Output
• Decision

An LDR is an example of an input component, what does LDR stand for?

• Light Delay Response
• Light Dependent Resistor
• Light Day Rate

A LDR is a component that changes its resistance depending on different ________ levels?

• Sound
• Time
• Light

What type of switch is commonly used as a digital input device, found on phones and keyboards?

• Push to make (PTM)
• Push to break (PTB)
• Toggle <br />

What input component changes its resistance level at different temperatures?

• Light Dependent Resistor
• Thermistor
• Transistor

What is the name given to the component that is a small semiconductor made from silicon and has many forms?

• Resistor
• Thermistor
• Transistor

Resistors limit the amount of _________ flowing in an electrical circuit?

• Current
• Resistance
• Sound