Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 52 · 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 microwave oven (b) a candle (c) a spinning top (d) a wind-up toy
2. 2.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
3. 3.🧭 Which part of a microcontroller board restarts the program? (a) the power LED (b) the voltage regulator (c) the reset button (d) the main chip
4. 4.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the main chip (c) the USB port (d) the voltage regulator
5. 5.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) USB or a 9 V battery (c) a wall socket directly (d) a 230 V cable
6. 6.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) connect sensors and LEDs (d) keeps the voltage steady
7. 7.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
8. 8.Which job is done by the power LED? (a) restarts the program (b) connect sensors and LEDs (c) keeps the voltage steady (d) shows the board is on
9. 9.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
10. 10.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
11. 11.🤖 When the main loop of a microcontroller program ends, what happens? (a) it stops forever (b) it starts again (c) it deletes itself (d) the board breaks
12. 12.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
13. 13.True or false: a microcontroller needs much more power. (a) True (b) False
14. 14.Which job is done by the voltage regulator? (a) shows the board is on (b) restarts the program (c) keeps the voltage steady (d) brings power and code
15. 15.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
16. 16.Which of these usually has a microcontroller inside? (a) a spinning top (b) a plain wall switch (c) a toy robot (d) a bicycle bell
17. 17.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the pins (b) the USB port (c) the reset button (d) the voltage regulator
18. 18.Which of these has no microcontroller inside? (a) a TV remote (b) a digital thermometer (c) a plain wall switch (d) a washing machine
19. 19.Which job is done by the pins? (a) connect sensors and LEDs (b) restarts the program (c) keeps the voltage steady (d) runs the program
20. 20.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
21. 21.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
22. 22.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
23. 23.🤖 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
24. 24.Which of these has no microcontroller inside? (a) a washing machine (b) a microwave oven (c) a hand pump (d) a toy robot
25. 25.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
26. 26.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a spinning top (c) a microwave oven (d) a TV remote
27. 27.True or false: a digital thermometer has no microcontroller inside. (a) False (b) True
28. 28.True or false: a TV remote has no microcontroller inside. (a) False (b) True
29. 29.True or false: a laptop has a built-in keyboard. (a) True (b) False
30. 30.Which of these usually has a microcontroller inside? (a) a candle (b) a digital thermometer (c) a plain wall switch (d) a spinning top
31. 31.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a wind-up toy (c) a microwave oven (d) a toy robot
32. 32.True or false: a TV remote usually has a microcontroller inside. (a) True (b) False
33. 33.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a spinning top (d) a bicycle bell
34. 34.True or false: a laptop uses very little power. (a) True (b) False
35. 35.Which of these has no microcontroller inside? (a) a digital thermometer (b) a microwave oven (c) a washing machine (d) a candle
36. 36.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the USB cable (c) the resistor (d) the power LED
37. 37.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the voltage regulator (c) the reset button (d) the USB port
39. 39.True or false: a candle usually has a microcontroller inside. (a) False (b) True
40. 40.True or false: a microwave oven has no microcontroller inside. (a) False (b) True

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