Microcontroller Quiz Chapter 4

What is the purpose of polling in microcontrollers?

• To handle timer operations

• To check the status of an external device

• To convert analog signals

• To generate interrupts

What is an interrupt in microcontrollers?

• A timing event trigger

• A method to slow down the output

• A digital-to-analog converter

• A hardware support for handling external interrupts

How does the Arduino handle analog input signals?

• By generating timer interrupts

• By monitoring specific interrupts

• By converting analog signals to digital values

• By using a digital-to-analog converter

What is the purpose of the Serial Port interface in Arduino?

• To transfer data in a serial sequence of bits

• To handle timer operations

• To check the status of an external device

• To generate analog output signals

What is the resolution of the ADC used in most Arduino models for analog input signals?

• 8-bit

• 10-bit

• 12-bit

• 16-bit

What method can be used to generate analog output signals on an Arduino?

• Analog-to-Digital Converter (ADC)

• Pulse-width Modulation (PWM)

• Serial Communication

• Digital-to-Analog Converter (DAC)

Which function is used to read values from the analog input interfaces on an Arduino?

• digitalWrite

• analogRead

• digitalRead

• analogWrite

What is the purpose of a Watchdog Timer in an Arduino system?

• To automatically reset the system if it hangs

• To provide additional memory storage

• To measure the temperature of the microcontroller

• To increase the clock speed of the microcontroller

How can the Watchdog Timer be disabled in an Arduino application?

• By removing the power source

• By calling the wdt_disable function

• By setting the time interval to 0 seconds

• By increasing the clock frequency

What is the maximum time interval that can be set for the Watchdog Timer on an Arduino?

• 1 second

• 10 seconds

• 8 seconds

• 4 seconds