Which of the following is an input device that detects changes in light level?
LED
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
At what stage of a system would a microcontroller be found?
Input
Output
Process
What is a microcontroller?
A discrete component
A programmable component
A sensor
What impact does replacing non-programmable integrated circuits with a microcontroller usually have on the size of a circuit?
Decreases size of circuit board
Increases size of circuit board
No difference in size of circuit board
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 buzzer produce?
Light
Heat
Sound
Which of the following is an output device that produces light?
Buzzer
Speaker
Which of the following amplifies a signal?
Light-dependent resistor (LDR)
Transistor