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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 118 · 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.⏱️ How many milliseconds is a wait of 3.6 seconds?
  2. 2.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds is a wait of 0.8 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) pauses for half a second (d) waits 500 seconds
  10. 10.⏱️ How many milliseconds is a wait of 2.2 seconds?
  11. 11.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 20 seconds?
  15. 15.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 60 (d) 100
  20. 20.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 2.9 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ How many milliseconds is a wait of 1 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 20 seconds?
  31. 31.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 1650 ms }
    How many times does the LED blink in 6 seconds?
  33. 33.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 2.5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 1750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 10 seconds?
  38. 38.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?

Answer key

  1. 3600
  2. 5.5
  3. 950
  4. 4400
  5. 800
  6. 150
  7. 1.25
  8. 1150
  9. pauses for half a second
  10. 2200
  11. 5400
  12. 800
  13. 2
  14. 50
  15. 6.75
  16. 1000
  17. 1000
  18. 15200
  19. 1000
  20. 6
  21. 24
  22. 2.75
  23. 6.5
  24. 2900
  25. 1450
  26. 35
  27. 900
  28. 1050
  29. 1000
  30. 50
  31. 4.75
  32. 3
  33. 8.75
  34. 4
  35. 8.25
  36. 2500
  37. 5
  38. 4900
  39. 5.25
  40. 3600

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