Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 219 · 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.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a digital alarm clock (d) a hand pump
2. 2.Which of these has no microcontroller inside? (a) a smart watch (b) a hand pump (c) a digital thermometer (d) a TV remote
3. 3.Which job is done by the reset button? (a) brings power and code (b) keeps the voltage steady (c) restarts the program (d) connect sensors and LEDs
4. 4.True or false: a candle usually has a microcontroller inside. (a) True (b) False
5. 5.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the main chip (c) the USB port (d) the reset button
6. 6.True or false: a candle has no microcontroller inside. (a) True (b) False
7. 7.Which job is done by the USB port? (a) keeps the voltage steady (b) brings power and code (c) restarts the program (d) connect sensors and LEDs
8. 8.Which of these has no microcontroller inside? (a) a TV remote (b) a wind-up toy (c) a washing machine (d) a toy robot
9. 9.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a spinning top (d) a plain wall switch
10. 10.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
11. 11.True or false: a laptop runs one small program. (a) False (b) True
12. 12.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) runs the program (c) brings power and code (d) restarts the program
13. 13.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
14. 14.True or false: a microcontroller runs one small program. (a) True (b) False
15. 15.Which of these usually has a microcontroller inside? (a) a candle (b) a wind-up toy (c) a bicycle bell (d) a smart watch
16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
17. 17.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the resistor (c) the USB cable (d) flash memory
18. 18.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
19. 19.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
20. 20.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) sent by sound (c) drawn with a pen (d) uploaded over USB
21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) USB or a 9 V battery (d) bare mains wires
22. 22.True or false: a laptop uses very little power. (a) True (b) False
23. 23.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
24. 24.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
25. 25.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
26. 26.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the main chip
27. 27.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the USB port (c) the reset button (d) the main chip
28. 28.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a spinning top (c) a hand pump (d) a candle
29. 29.True or false: a microcontroller runs many apps at once. (a) True (b) False
30. 30.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the voltage regulator (c) the USB port (d) the power LED
31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the USB port (d) the power LED
32. 32.Which of these usually has a microcontroller inside? (a) a washing machine (b) a plain wall switch (c) a hand pump (d) a candle
33. 33.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
34. 34.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it stops forever (c) the board breaks (d) it deletes itself
35. 35.True or false: a microcontroller needs much more power. (a) False (b) True
36. 36.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a digital thermometer (d) a spinning top
37. 37.🤖 What is a microcontroller? (a) a type of battery (b) a big desktop computer (c) a computer on one chip (d) a kind of bulb
38. 38.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a candle (c) a toy robot (d) a plain wall switch
39. 39.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a TV remote (d) a toy robot
40. 40.Which job is done by the main chip? (a) runs the program (b) brings power and code (c) shows the board is on (d) restarts the program

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