Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 19 · 40 questions

Remember (One chip, one job): Microcontroller = processor + memory + input/output pins on one chip. Board parts: USB port (power and code), pins, reset button, power LED, main chip, voltage regulator. Write the program → upload over USB → it runs its loop for ever; power by USB or a small battery.

1. 1.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
2. 2.Which of these has no microcontroller inside? (a) a toy robot (b) a microwave oven (c) a digital thermometer (d) a wind-up toy
3. 3.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a kind of bulb (d) a computer on one chip
4. 4.Which job is done by the main chip? (a) brings power and code (b) connect sensors and LEDs (c) restarts the program (d) runs the program
5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) a wall socket directly (c) a 230 V cable (d) bare mains wires
6. 6.Which job is done by the USB port? (a) shows the board is on (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
7. 7.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) brings power and code (c) restarts the program (d) keeps the voltage steady
8. 8.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a digital thermometer (c) a TV remote (d) a bicycle bell
9. 9.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
10. 10.Which job is done by the pins? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) runs the program
11. 11.True or false: a hand pump has no microcontroller inside. (a) False (b) True
12. 12.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
13. 13.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the main chip (d) the power LED
14. 14.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
15. 15.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) sent by sound (c) typed on the chip (d) uploaded over USB
16. 16.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the pins (c) the USB port (d) the voltage regulator
17. 17.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
18. 18.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
19. 19.True or false: a laptop runs many apps at once. (a) True (b) False
20. 20.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
21. 21.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it starts again (c) the board breaks (d) it stops forever
22. 22.Which job is done by the power LED? (a) runs the program (b) brings power and code (c) shows the board is on (d) connect sensors and LEDs
23. 23.True or false: a smart watch has no microcontroller inside. (a) False (b) True
24. 24.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
25. 25.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the USB port (b) the main chip (c) the voltage regulator (d) the power LED
27. 27.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a hand pump (c) a TV remote (d) a plain wall switch
28. 28.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a wind-up toy (d) a washing machine
29. 29.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a wind-up toy (d) a plain wall switch
30. 30.True or false: a laptop runs one small program. (a) True (b) False
31. 31.Which of these has no microcontroller inside? (a) a microwave oven (b) a smart watch (c) a toy robot (d) a hand pump
32. 32.Which of these has no microcontroller inside? (a) a microwave oven (b) a spinning top (c) a digital thermometer (d) a TV remote
33. 33.True or false: a microcontroller needs much more power. (a) False (b) True
34. 34.🤖 Does a wind-up toy usually have a microcontroller inside? (a) No (b) Yes
35. 35.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
36. 36.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a bicycle bell (c) a spinning top (d) a wind-up toy
37. 37.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
38. 38.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
39. 39.Which of these has no microcontroller inside? (a) a candle (b) a toy robot (c) a washing machine (d) a digital thermometer
40. 40.True or false: a laptop uses very little power. (a) True (b) False

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