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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 56 · 40 questions
TalentJR

Remember (ON + OFF = one blink): 1 second = 1000 ms. One blink = ON wait + OFF wait. Blinks = total time in ms ÷ one blink; repeat n times takes n × one round.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 18 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) pauses for half a second (d) turns the LED off
  5. 5.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  8. 8.⏱️ How many milliseconds is a wait of 0.9 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 10 seconds?
  10. 10.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 1.2 seconds?
  15. 15.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 10 seconds?
  22. 22.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 8 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  31. 31.⏱️ How many milliseconds is a wait of 1.7 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 0.8 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 4.8 seconds?
  38. 38.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 45
  2. 1750
  3. 500
  4. pauses for half a second
  5. 3
  6. 1100
  7. 1000
  8. 900
  9. 5
  10. 8100
  11. 2.75
  12. 1.25
  13. 10
  14. 1200
  15. 10000
  16. 4.75
  17. 12
  18. 300
  19. 5
  20. 9
  21. 5
  22. 11900
  23. 10800
  24. 350
  25. 3000
  26. 11000
  27. 600
  28. 16
  29. 1400
  30. 9.75
  31. 1700
  32. 800
  33. 400
  34. 8.75
  35. 3000
  36. 6300
  37. 4800
  38. 2.25
  39. 2
  40. 450

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