Question

Which of the following should be considered when implementing a low power IoT device (or, which attributes will impact power usage on an IoT device)? (select 3)

A. Clock rate of the CPU
B. Sensor resolution
C. Number of attached sensors
D. Supply voltage
E. RAM

Answer 1

The three attributes that should be considered when implementing a low power IoT device are the clock rate of the CPU, the supply voltage, and the number of attached sensors, as these factors have a direct impact on power consumption.

Step-by-step explanation:

When implementing a low power IoT device, there are several attributes that can impact power usage. Three important factors to consider are:

• Clock rate of the CPU: A higher clock rate typically requires more power, as the CPU is performing more operations per second. Therefore, using a lower clock rate can reduce power consumption.
• Supply voltage: Power consumption is directly related to the supply voltage; lower supply voltages reduce power consumption but may also affect the performance of the device.
• Number of attached sensors: Each sensor consumes power, so the more sensors attached, the higher the overall power usage of the device.

While factors such as sensor resolution and RAM do influence power consumption, they are not as directly impactful as the three aforementioned attributes, especially in the broader context of a low power IoT device design.