ROBOTICS MIDTERM

Which of the following best defines a digital signal?

• A signal that varies smoothly like a dimmer switch

• A signal that uses discrete values, like a light switch (on/off)

• A signal that has continuous values within a range

• A signal that is prone to more noise interference

What characteristic is most associated with analog signals?

• Binary; specific values

• Less noise interference

• Continuous; can take any value within a range

• Used in digital clocks

Which of the following devices typically uses digital signals?

• Volume knob on a stereo

• Analog thermometer

• Digital clock

• Light dimmer switch

Which of these devices typically uses analog signals? (Select two)

• Microphone

• Digital calculator

• Light dimmer switch

• Computer mouse

If a signal is affected by noise interference, it is likely to be which type of signal?

• Digital signal

• Analog signal

• Both analog and digital

• Neither

What type of signal would you most likely use to control a robot's movement precisely?

• Analog signal

• Digital signal

• Both analog and digital signals

• Neither

Is it possible to use both analog and digital signals in the same project?

• Yes

• No

• Only with a special converter

• Only for advanced users

What is a sensor?

• A device that controls external devices like motors

• A device that detects physical changes and converts them into electrical signals

• A device that only outputs digital signals

• A device that processes data from a microcontroller

What is the main function of an actuator?

• To detect physical changes

• To convert electrical signals into physical actions, such as movement or sound

• To read and measure environmental conditions

• To convert analog signals into digital signals

What type of signal is typically produced by a voltage-output sensor?

• Digital signal

• Binary signal

• Voltage signal that varies with physical changes

• Constant current signal