Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 450 · 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 part of a microcontroller board brings power and code? (a) the USB port (b) the pins (c) the reset button (d) the main chip
2. 2.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a 230 V cable (c) a wall socket directly (d) USB or a 9 V battery
3. 3.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
4. 4.True or false: a smart watch has no microcontroller inside. (a) True (b) False
5. 5.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) the board breaks (c) it starts again (d) it deletes itself
6. 6.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
7. 7.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
8. 8.True or false: a toy robot has no microcontroller inside. (a) False (b) True
9. 9.Which job is done by the reset button? (a) connect sensors and LEDs (b) keeps the voltage steady (c) restarts the program (d) shows the board is on
10. 10.Which of these usually has a microcontroller inside? (a) a hand pump (b) a washing machine (c) a wind-up toy (d) a bicycle bell
11. 11.Which job is done by the pins? (a) connect sensors and LEDs (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
12. 12.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a wind-up toy (d) a plain wall switch
13. 13.🤖 What is a microcontroller? (a) a big desktop computer (b) a kind of bulb (c) a computer on one chip (d) a type of battery
14. 14.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
15. 15.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
16. 16.Which of these has no microcontroller inside? (a) a hand pump (b) a smart watch (c) a digital alarm clock (d) a microwave oven
17. 17.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
18. 18.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) typed on the chip (c) uploaded over USB (d) sent by sound
19. 19.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
21. 21.True or false: a microcontroller needs much more power. (a) True (b) False
22. 22.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
23. 23.Which job is done by the power LED? (a) brings power and code (b) keeps the voltage steady (c) shows the board is on (d) restarts the program
24. 24.Which of these usually has a microcontroller inside? (a) a hand pump (b) a bicycle bell (c) a digital thermometer (d) a spinning top
25. 25.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
26. 26.Which of these has no microcontroller inside? (a) a digital thermometer (b) a plain wall switch (c) a TV remote (d) a washing machine
27. 27.True or false: a laptop runs many apps at once. (a) False (b) True
28. 28.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) keeps the voltage steady
29. 29.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
30. 30.True or false: a laptop runs one small program. (a) True (b) False
31. 31.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
32. 32.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) the power LED (c) flash memory (d) the resistor
33. 33.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the main chip (c) the pins (d) the power LED
34. 34.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
35. 35.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
36. 36.True or false: a microcontroller uses very little power. (a) True (b) False
37. 37.True or false: a spinning top has no microcontroller inside. (a) True (b) False
38. 38.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the reset button (c) the USB port (d) the power LED
39. 39.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
40. 40.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a wind-up toy (d) a TV remote

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