Electronics Worksheet: What Is a Microcontroller

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

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