1.6 &1.7 Electronic Systems & Programmable components

Which of the following is an input device that detects changes in light level?

• LED

• LDR

• Thermistor

• Capacitor

Which of the following is an input device that detects changes in temperature level?

• LDR

• Switch

• Thermistor

• Capacitor

Which of the following switches allows current to flow through it when pressed?

• Push-to-make switch

• Push-to-break switch

• Tilt switch

• Toggle switch

At what stage of a system would a microcontroller be found?

• Input

• Output

• Process

• Start

What is a microcontroller?

• A discrete component

• A programmable component

• A sensor

• A small remote

What impact does replacing non-programmable integrated circuits with a microcontroller usually have on the size of a circuit?

• Decreases the size of circuit board

• Increases size of circuit board

• No difference in size of circuit board

• No circuit board needed

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

• Microcontrollers have no cost

What output does a buzzer produce?

• Motion

• Heat

• Light

• Sound

Which of the following is an output device that produces light?

• Buzzer

• LED

• Speaker

• Motor

Which of the following amplifies a signal?

• Capacitor

• Thermistor

• Light-dependent resistor (LDR)

• Transistor