21. Which of the following is an example of an embedded system that is used in smart homes?
A. A digital camera
B. A thermostat controller
C. A smartwatch
D. A heart rate monitor
22. Which of the following is an example of an embedded system that is used in medical imaging?
A. A traffic light controller
B. A CT scanner
C. A smart refrigerator
D. A smart speaker
23. Which of the following is an example of an embedded system that is used in energy management?
A. A robotic arm controller
B. A solar panel controller
C. A dishwasher controller
D. A heart rate monitor
24. Which of the following is an example of an embedded system that is used in robotics?
A. A microwave oven
B. A smart speaker
C. A robotic arm controller
D. A digital camera
25. What is the purpose of a bootloader in an embedded system?
A. To perform hardware-specific device driver initialization
B. To load the application software into memory
C. To manage input/output operations
D. To provide a graphical user interface (GUI) for the user
