What are 3 examples of embedded systems?

• A. Refrigerators, microwaves, and air conditioners
• B. Burglar alarms and security cameras
• C. Dishwashers, microwaves and burglar alarms
• D. Smartphones, tablets, and laptops

Answer: (C)

Embedded systems are dedicated computing units inside a larger product, designed to perform a specific set of tasks with real-time control, using firmware and limited resources. The trio of dishwashers, microwaves, and burglar alarms fits this idea well: each contains a small processor that runs fixed software to manage cycles, monitor sensors, and drive actuators like valves, motors, or alarms. They’re built to perform a single function reliably within the device, rather than serving as general-purpose computers.

In contrast, smartphones, tablets, and laptops are general-purpose computing devices meant to run many applications and multitask, which is why they aren’t representative examples of embedded systems. Some appliances like refrigerators or air conditioners also use embedded controllers, but the chosen trio offers a clear, common set of embedded examples in everyday life.