Which of the following is an input device that detects changes in light level?
Lamp
LDR
Thermistor
Which of the following is an input device that detects changes in temperature level?
Switch
Which of the following switches allows current to flow through it when pressed?
Push-to-make switch
Push-to-break switch
Tilt switch
What three parts make an open loop system diagram?
Input, process and feedback
Input, output and feedback
Input, process and output
What is a microcontroller?
A discrete component
A programmable component
A sensor
Which basic, simple diagram shows all of the input, process and output elements that make up the system being designed?
Block diagram
Circuit diagram
Flowchart
Which answer best describes the cost of a microcontroller?
Cheaper than lots of individual components
More expensive than lots of individual components
The same cost as lots of individual components
What output does a speaker produce?
Light
Heat
Sound
Which of the following is an output device that produces light?
Buzzer
Loudspeaker
What electrical component is a semi-conductor?
Diode
Microcontroller