Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 336 · 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.True or false: a microcontroller uses very little power. (a) False (b) True
2. 2.Which job is done by the voltage regulator? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) brings power and code
3. 3.🤖 Does a plain wall switch usually have a microcontroller inside? (a) Yes (b) No
4. 4.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
5. 5.True or false: a candle usually has a microcontroller inside. (a) False (b) True
6. 6.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
7. 7.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
8. 8.True or false: a TV remote has no microcontroller inside. (a) False (b) True
9. 9.🧭 Which part of a microcontroller board brings power and code? (a) the pins (b) the main chip (c) the reset button (d) the USB port
10. 10.🤖 Where does the board keep its program when the power is off? (a) flash memory (b) the resistor (c) the power LED (d) the USB cable
11. 11.Which of these usually has a microcontroller inside? (a) a toy robot (b) a candle (c) a hand pump (d) a wind-up toy
12. 12.Which of these has no microcontroller inside? (a) a hand pump (b) a toy robot (c) a microwave oven (d) a washing machine
13. 13.True or false: a laptop runs one small program. (a) False (b) True
14. 14.Which job is done by the power LED? (a) connect sensors and LEDs (b) keeps the voltage steady (c) runs the program (d) shows the board is on
15. 15.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a plain wall switch (c) a hand pump (d) a spinning top
16. 16.Which job is done by the main chip? (a) keeps the voltage steady (b) runs the program (c) shows the board is on (d) brings power and code
17. 17.True or false: a laptop has a built-in keyboard. (a) True (b) False
18. 18.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
19. 19.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
20. 20.Which of these has no microcontroller inside? (a) a toy robot (b) a plain wall switch (c) a microwave oven (d) a washing machine
21. 21.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a candle (d) a wind-up toy
22. 22.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
23. 23.Which job is done by the pins? (a) connect sensors and LEDs (b) runs the program (c) keeps the voltage steady (d) restarts the program
24. 24.True or false: a microcontroller runs many apps at once. (a) True (b) False
25. 25.🤖 Does a hand pump usually have a microcontroller inside? (a) No (b) Yes
26. 26.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the reset button (c) the pins (d) the power LED
27. 27.🧭 Which part of a microcontroller board shows the board is on? (a) the power LED (b) the voltage regulator (c) the USB port (d) the main chip
28. 28.🤖 What is a microcontroller? (a) a computer on one chip (b) a kind of bulb (c) a type of battery (d) a big desktop computer
29. 29.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a bicycle bell (d) a smart watch
30. 30.Which job is done by the reset button? (a) keeps the voltage steady (b) runs the program (c) restarts the program (d) brings power and code
31. 31.Which job is done by the USB port? (a) brings power and code (b) connect sensors and LEDs (c) shows the board is on (d) restarts the program
32. 32.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a washing machine (c) a TV remote (d) a spinning top
33. 33.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
34. 34.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
35. 35.True or false: a laptop needs much more power. (a) True (b) False
36. 36.🤖 How does a new program get onto a microcontroller board? (a) typed on the chip (b) drawn with a pen (c) sent by sound (d) uploaded over USB
37. 37.True or false: a laptop uses very little power. (a) True (b) False
38. 38.True or false: a laptop runs many apps at once. (a) True (b) False
39. 39.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
40. 40.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a wind-up toy (d) a TV remote

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