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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 115 · 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 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  3. 3.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 0.8 seconds?
  6. 6.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  7. 7.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  8. 8.⏱️ How many milliseconds is a wait of 2 seconds?
  9. 9.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  12. 12.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) waits 500 seconds (d) turns the LED off
  13. 13.⏱️ How many milliseconds is a wait of 4.2 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 2.5 seconds?
  15. 15.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 1.8 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 2.4 seconds?
  20. 20.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  21. 21.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 1.7 seconds?
  25. 25.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ How many milliseconds is a wait of 0.9 seconds?

Answer key

  1. 16
  2. 40
  3. 7200
  4. 950
  5. 800
  6. 1.5
  7. 7.75
  8. 2000
  9. 0.5
  10. 1100
  11. 7
  12. pauses for half a second
  13. 4200
  14. 2500
  15. 7000
  16. 250
  17. 1800
  18. 36
  19. 2400
  20. 1000
  21. 9.5
  22. 900
  23. 6300
  24. 1700
  25. 2400
  26. 850
  27. 10
  28. 550
  29. 8
  30. 5500
  31. 6
  32. 6000
  33. 200
  34. 3.25
  35. 1200
  36. 7700
  37. 6.75
  38. 2.75
  39. 1250
  40. 900

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