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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 141 · 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.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  3. 3.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 3.4 seconds?
  6. 6.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 16 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 1000 (d) 60
  12. 12.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 0.7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 18 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 4.9 seconds?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 0.3 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 8250 ms”. How many seconds is that? =

Answer key

  1. 7500
  2. pauses for half a second
  3. 1500
  4. 6
  5. 3400
  6. 2800
  7. 2.25
  8. 40
  9. 12
  10. 4
  11. 1000
  12. 5.75
  13. 3.25
  14. 9.75
  15. 1800
  16. 3000
  17. 1650
  18. 13000
  19. 550
  20. 1050
  21. 1900
  22. 8.75
  23. 700
  24. 1200
  25. 1750
  26. 18000
  27. 5
  28. 3600
  29. 45
  30. 800
  31. 4900
  32. 2000
  33. 1.5
  34. 25
  35. 11200
  36. 300
  37. 1600
  38. 5.25
  39. 2800
  40. 8.25

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