183k views
5 votes
Which three steps might be included in an algorithm for a digital thermostat?

✓ A. The thermostat uses the resistance detected to calculate the
temperature.
B. The thermostat sends an electrical signal to either the air
conditioner or the heater.
C. The thermostat measures electrical resistance with its thermistor.
O D. The thermostat automatically installs itself by wiring itself to the
house's electrical system.

User Marisol
by
4.2k points

2 Answers

14 votes

Final answer:

The three steps in an algorithm for a digital thermostat are measuring electrical resistance, calculating the temperature, and sending an electrical signal to the air conditioner or heater.

Step-by-step explanation:

The three steps that might be included in an algorithm for a digital thermostat are:

  1. The thermostat measures electrical resistance with its thermistor. A thermistor is a resistor that changes its resistance depending on the temperature. By measuring the resistance, the thermostat can determine the temperature.
  2. The thermostat calculates the temperature using the detected resistance. Based on the known relationship between resistance and temperature, the thermostat can use the measured resistance value to calculate the corresponding temperature.
  3. The thermostat sends an electrical signal to either the air conditioner or the heater. Once the temperature is calculated, the thermostat decides whether to activate the air conditioner or the heater based on the desired temperature and the current temperature.
User Teena Thomas
by
4.7k points
7 votes

Answer:

Step-by-step explanation:

It certainly isn't D. It would cost a fortune to make that happen. It's not impossibe. Just impractical.

It's not A. Resistance is a floating physical thing present in the air.

B could be correct, but there is a better answer.

The answer is C. A thermistor is a resistance that is temperature sensitive.

User Chros
by
4.1k points