Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 192 · 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 washing machine (c) a plain wall switch (d) a candle
2. 2.True or false: a microcontroller needs much more power. (a) True (b) False
3. 3.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
4. 4.True or false: a laptop runs one small program. (a) True (b) False
5. 5.Which of these usually has a microcontroller inside? (a) a spinning top (b) a wind-up toy (c) a hand pump (d) a TV remote
6. 6.True or false: a microwave oven usually has a microcontroller inside. (a) True (b) False
7. 7.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
8. 8.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the voltage regulator (b) the pins (c) the power LED (d) the main chip
9. 9.🤖 Where does the board keep its program when the power is off? (a) the power LED (b) the USB cable (c) flash memory (d) the resistor
10. 10.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
11. 11.🤖 What is a microcontroller? (a) a computer on one chip (b) a big desktop computer (c) a kind of bulb (d) a type of battery
12. 12.Which of these has no microcontroller inside? (a) a washing machine (b) a toy robot (c) a wind-up toy (d) a TV remote
13. 13.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
14. 14.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
15. 15.Which of these has no microcontroller inside? (a) a spinning top (b) a digital alarm clock (c) a TV remote (d) a digital thermometer
16. 16.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
17. 17.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
18. 18.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
19. 19.Which job is done by the power LED? (a) shows the board is on (b) connect sensors and LEDs (c) restarts the program (d) brings power and code
20. 20.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
21. 21.🤖 Which is a safe power source for a beginner microcontroller board? (a) USB or a 9 V battery (b) bare mains wires (c) a 230 V cable (d) a wall socket directly
22. 22.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the power LED (d) the reset button
23. 23.🤖 Microcontroller or laptop: which one runs one small program? (a) laptop (b) microcontroller
24. 24.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
25. 25.True or false: a digital alarm clock has no microcontroller inside. (a) False (b) True
26. 26.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the power LED (b) the reset button (c) the pins (d) the main chip
27. 27.🤖 How does a new program get onto a microcontroller board? (a) drawn with a pen (b) uploaded over USB (c) typed on the chip (d) sent by sound
28. 28.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it deletes itself (d) it stops forever
29. 29.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) No (b) Yes
30. 30.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a microwave oven (d) a digital alarm clock
31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the USB port (c) the power LED (d) the pins
32. 32.True or false: a laptop has no screen of its own. (a) True (b) False
33. 33.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
34. 34.True or false: a laptop has a built-in keyboard. (a) True (b) False
35. 35.Which of these has no microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a digital alarm clock (d) a washing machine
36. 36.🤖 Does a bicycle bell usually have a microcontroller inside? (a) Yes (b) No
37. 37.Which job is done by the pins? (a) connect sensors and LEDs (b) brings power and code (c) runs the program (d) keeps the voltage steady
38. 38.Which job is done by the main chip? (a) runs the program (b) shows the board is on (c) restarts the program (d) connect sensors and LEDs
39. 39.True or false: a laptop uses very little power. (a) False (b) True
40. 40.True or false: a toy robot has no microcontroller inside. (a) True (b) False

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