Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 284 · 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 part of a microcontroller board connect sensors and LEDs? (a) the reset button (b) the voltage regulator (c) the pins (d) the main chip
2. 2.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
3. 3.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the voltage regulator (c) the main chip (d) the USB port
4. 4.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
5. 5.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital thermometer (c) a candle (d) a spinning top
6. 6.Which of these has no microcontroller inside? (a) a digital thermometer (b) a digital alarm clock (c) a TV remote (d) a spinning top
7. 7.Which job is done by the main chip? (a) restarts the program (b) runs the program (c) keeps the voltage steady (d) shows the board is on
8. 8.🤖 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
9. 9.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the main chip (c) the pins (d) the reset button
10. 10.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
11. 11.🤖 When the main loop of a microcontroller program ends, what happens? (a) it starts again (b) it deletes itself (c) it stops forever (d) the board breaks
12. 12.🤖 Where does the board keep its program when the power is off? (a) the resistor (b) the power LED (c) flash memory (d) the USB cable
13. 13.Which job is done by the power LED? (a) keeps the voltage steady (b) connect sensors and LEDs (c) shows the board is on (d) restarts the program
14. 14.🤖 Does a washing machine usually have a microcontroller inside? (a) Yes (b) No
15. 15.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a spinning top (c) a washing machine (d) a plain wall switch
16. 16.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
17. 17.True or false: a TV remote has no microcontroller inside. (a) False (b) True
18. 18.Which job is done by the pins? (a) shows the board is on (b) restarts the program (c) brings power and code (d) connect sensors and LEDs
19. 19.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
20. 20.True or false: a laptop has no screen of its own. (a) True (b) False
21. 21.True or false: a toy robot usually has a microcontroller inside. (a) False (b) True
22. 22.🤖 What is a microcontroller? (a) a type of battery (b) a kind of bulb (c) a computer on one chip (d) a big desktop computer
23. 23.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a bicycle bell (d) a digital alarm clock
24. 24.Which of these usually has a microcontroller inside? (a) a toy robot (b) a hand pump (c) a candle (d) a wind-up toy
25. 25.Which job is done by the reset button? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) restarts the program
26. 26.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
27. 27.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
28. 28.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
29. 29.🤖 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
30. 30.Which job is done by the USB port? (a) restarts the program (b) runs the program (c) brings power and code (d) shows the board is on
31. 31.Which of these has no microcontroller inside? (a) a smart watch (b) a digital thermometer (c) a plain wall switch (d) a microwave oven
32. 32.True or false: a spinning top usually has a microcontroller inside. (a) True (b) False
33. 33.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
34. 34.🧭 Which part of a microcontroller board runs the program? (a) the main chip (b) the reset button (c) the pins (d) the USB port
35. 35.🧭 Which part of a microcontroller board shows the board is on? (a) the reset button (b) the main chip (c) the power LED (d) the voltage regulator
36. 36.Which of these has no microcontroller inside? (a) a hand pump (b) a washing machine (c) a smart watch (d) a microwave oven
37. 37.Which of these has no microcontroller inside? (a) a wind-up toy (b) a washing machine (c) a toy robot (d) a digital thermometer
38. 38.True or false: a microcontroller uses very little power. (a) False (b) True
39. 39.Which of these has no microcontroller inside? (a) a digital alarm clock (b) a smart watch (c) a microwave oven (d) a bicycle bell
40. 40.True or false: a wind-up toy usually has a microcontroller inside. (a) True (b) False

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