Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 188 · 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 has no microcontroller inside? (a) a TV remote (b) a toy robot (c) a digital alarm clock (d) a hand pump
2. 2.Which job is done by the main chip? (a) shows the board is on (b) runs the program (c) keeps the voltage steady (d) restarts the program
3. 3.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False
4. 4.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
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.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
7. 7.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
8. 8.True or false: a candle usually has a microcontroller inside. (a) True (b) False
9. 9.Which job is done by the power LED? (a) keeps the voltage steady (b) shows the board is on (c) runs the program (d) brings power and code
10. 10.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
11. 11.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
12. 12.Which job is done by the reset button? (a) keeps the voltage steady (b) connect sensors and LEDs (c) brings power and code (d) restarts the program
13. 13.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) flash memory (c) the power LED (d) the USB cable
14. 14.Which of these usually has a microcontroller inside? (a) a spinning top (b) a toy robot (c) a plain wall switch (d) a hand pump
15. 15.Which job is done by the USB port? (a) brings power and code (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
16. 16.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a wind-up toy (d) a washing machine
17. 17.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
18. 18.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
19. 19.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
20. 20.True or false: a washing machine usually has a microcontroller inside. (a) True (b) False
21. 21.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
22. 22.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
23. 23.Which job is done by the voltage regulator? (a) keeps the voltage steady (b) restarts the program (c) shows the board is on (d) brings power and code
24. 24.Which job is done by the pins? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) runs the program
25. 25.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
26. 26.🧭 Which part of a microcontroller board runs the program? (a) the reset button (b) the USB port (c) the voltage regulator (d) the main chip
27. 27.🤖 What is a microcontroller? (a) a kind of bulb (b) a type of battery (c) a computer on one chip (d) a big desktop computer
28. 28.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
29. 29.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
30. 30.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
31. 31.🤖 How does a new program get onto a microcontroller board? (a) sent by sound (b) drawn with a pen (c) uploaded over USB (d) typed on the chip
32. 32.True or false: a wind-up toy has no microcontroller inside. (a) True (b) False
33. 33.True or false: a laptop uses very little power. (a) False (b) True
34. 34.True or false: a laptop needs much more power. (a) True (b) False
35. 35.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
36. 36.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
37. 37.True or false: a digital thermometer has no microcontroller inside. (a) True (b) False
38. 38.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a digital thermometer (d) a wind-up toy
39. 39.Which of these usually has a microcontroller inside? (a) a hand pump (b) a candle (c) a bicycle bell (d) a TV remote
40. 40.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a candle (d) a bicycle bell

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