Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 632 · 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 job is done by the pins? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) connect sensors and LEDs
2. 2.True or false: a laptop needs much more power. (a) False (b) True
3. 3.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
4. 4.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
5. 5.Which of these has no microcontroller inside? (a) a bicycle bell (b) a toy robot (c) a TV remote (d) a digital alarm clock
6. 6.🤖 What is a microcontroller? (a) a computer on one chip (b) a type of battery (c) a big desktop computer (d) a kind of bulb
7. 7.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
8. 8.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a candle (c) a hand pump (d) a digital thermometer
9. 9.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
10. 10.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) laptop (b) microcontroller
11. 11.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) runs the program (d) restarts the program
12. 12.🧭 Which part of a microcontroller board shows the board is on? (a) the voltage regulator (b) the USB port (c) the power LED (d) the reset button
13. 13.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
14. 14.True or false: a microcontroller uses very little power. (a) True (b) False
15. 15.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
16. 16.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
17. 17.🤖 Does a candle usually have a microcontroller inside? (a) No (b) Yes
18. 18.True or false: a microcontroller needs much more power. (a) False (b) True
19. 19.🤖 Which is a safe power source for a beginner microcontroller board? (a) a 230 V cable (b) bare mains wires (c) a wall socket directly (d) USB or a 9 V battery
20. 20.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
21. 21.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a bicycle bell (d) a microwave oven
22. 22.🤖 How does a new program get onto a microcontroller board? (a) uploaded over USB (b) typed on the chip (c) sent by sound (d) drawn with a pen
23. 23.Which job is done by the reset button? (a) connect sensors and LEDs (b) restarts the program (c) shows the board is on (d) keeps the voltage steady
24. 24.Which of these usually has a microcontroller inside? (a) a smart watch (b) a candle (c) a plain wall switch (d) a wind-up toy
25. 25.Which job is done by the voltage regulator? (a) runs the program (b) shows the board is on (c) brings power and code (d) keeps the voltage steady
26. 26.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
27. 27.Which job is done by the power LED? (a) runs the program (b) connect sensors and LEDs (c) shows the board is on (d) keeps the voltage steady
28. 28.True or false: a microcontroller runs one small program. (a) True (b) False
29. 29.Which of these has no microcontroller inside? (a) a microwave oven (b) a toy robot (c) a spinning top (d) a TV remote
30. 30.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
31. 31.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
32. 32.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
33. 33.True or false: a laptop has no screen of its own. (a) True (b) False
34. 34.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
35. 35.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a digital thermometer (d) a hand pump
36. 36.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
37. 37.🤖 Where does the board keep its program when the power is off? (a) the USB cable (b) flash memory (c) the resistor (d) the power LED
38. 38.🧭 Which part of a microcontroller board restarts the program? (a) the pins (b) the reset button (c) the main chip (d) the voltage regulator
39. 39.Which of these usually has a microcontroller inside? (a) a candle (b) a bicycle bell (c) a washing machine (d) a hand pump
40. 40.🧭 Which part of a microcontroller board brings power and code? (a) the USB port (b) the main chip (c) the power LED (d) the pins

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