Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 489 · 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 candle has no microcontroller inside. (a) False (b) True
2. 2.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
3. 3.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
4. 4.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) drawn with a pen (d) sent by sound
5. 5.Which job is done by the pins? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) brings power and code
6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the reset button (c) the main chip (d) the pins
7. 7.🤖 Which is a safe power source for a beginner microcontroller board? (a) bare mains wires (b) a wall socket directly (c) a 230 V cable (d) USB or a 9 V battery
8. 8.True or false: a smart watch usually has a microcontroller inside. (a) False (b) True
9. 9.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
10. 10.True or false: a microcontroller has no screen of its own. (a) False (b) True
11. 11.True or false: a digital thermometer usually has a microcontroller inside. (a) False (b) True
12. 12.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
13. 13.Which of these has no microcontroller inside? (a) a smart watch (b) a hand pump (c) a digital alarm clock (d) a toy robot
14. 14.🧭 Which part of a microcontroller board runs the program? (a) the USB port (b) the power LED (c) the pins (d) the main chip
15. 15.Which of these usually has a microcontroller inside? (a) a microwave oven (b) a wind-up toy (c) a hand pump (d) a candle
16. 16.True or false: a laptop needs much more power. (a) True (b) False
17. 17.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) runs the program (d) shows the board is on
18. 18.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
19. 19.🤖 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
20. 20.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
21. 21.True or false: a microcontroller uses very little power. (a) False (b) True
22. 22.Which of these has no microcontroller inside? (a) a digital thermometer (b) a candle (c) a washing machine (d) a digital alarm clock
23. 23.Which job is done by the reset button? (a) restarts the program (b) shows the board is on (c) runs the program (d) connect sensors and LEDs
24. 24.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
25. 25.Which job is done by the USB port? (a) connect sensors and LEDs (b) shows the board is on (c) restarts the program (d) brings power and code
26. 26.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
27. 27.Which job is done by the power LED? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
28. 28.True or false: a digital alarm clock has no microcontroller inside. (a) True (b) False
29. 29.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a plain wall switch (c) a spinning top (d) a digital alarm clock
30. 30.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
31. 31.Which of these has no microcontroller inside? (a) a digital thermometer (b) a toy robot (c) a wind-up toy (d) a TV remote
32. 32.True or false: a washing machine has no microcontroller inside. (a) True (b) False
33. 33.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
34. 34.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
35. 35.Which of these has no microcontroller inside? (a) a plain wall switch (b) a digital thermometer (c) a washing machine (d) a digital alarm clock
36. 36.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) the board breaks (c) it stops forever (d) it deletes itself
37. 37.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
38. 38.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
39. 39.True or false: a bicycle bell usually has a microcontroller inside. (a) False (b) True
40. 40.True or false: a toy robot has no microcontroller inside. (a) True (b) False

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