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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 878 · 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 4.1 seconds?
  2. 2.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds is a wait of 4.3 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 20 seconds?
  6. 6.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 3.8 seconds?
  8. 8.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  9. 9.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  10. 10.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  12. 12.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 0.9 seconds?
  18. 18.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  19. 19.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 1 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  25. 25.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.4 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  28. 28.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 10 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  40. 40.⏱️ A program says “wait 4500 ms”. How many seconds is that? =

Answer key

  1. 4100
  2. 3500
  3. 3200
  4. 4300
  5. 10
  6. 1.25
  7. 3800
  8. pauses for half a second
  9. 6
  10. 2200
  11. 25
  12. 0.75
  13. 1.75
  14. 4800
  15. 1500
  16. 950
  17. 900
  18. 1.5
  19. 10200
  20. 50
  21. 7200
  22. 1
  23. 1000
  24. 2
  25. 5.25
  26. 2400
  27. 4
  28. 6.5
  29. 4
  30. 9100
  31. 3.75
  32. 800
  33. 5
  34. 900
  35. 18000
  36. 5400
  37. 10
  38. 35
  39. 10
  40. 4.5

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