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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 566 · 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 900 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 3.4 seconds?
  3. 3.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 2.7 seconds?
  5. 5.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  12. 12.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds is a wait of 1.1 seconds?
  16. 16.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 2.5 seconds?
  18. 18.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.6 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 4.1 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 1.3 seconds?
  23. 23.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 3.5 seconds?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 16 seconds?
  29. 29.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  39. 39.⏱️ How many milliseconds is a wait of 4.4 seconds?
  40. 40.⏱️ A program says “wait 4750 ms”. How many seconds is that? =

Answer key

  1. 1000
  2. 3400
  3. 3.5
  4. 2700
  5. 6600
  6. 250
  7. 9800
  8. 6
  9. 1050
  10. 20
  11. 1000
  12. 1.5
  13. 6.5
  14. 1400
  15. 1100
  16. 2.75
  17. 2500
  18. 9100
  19. 1600
  20. 950
  21. 4100
  22. 1300
  23. 10000
  24. 1250
  25. 3500
  26. 5700
  27. pauses for half a second
  28. 40
  29. 9900
  30. 1
  31. 20
  32. 1350
  33. 450
  34. 1.75
  35. 750
  36. 350
  37. 8
  38. 2.25
  39. 4400
  40. 4.75

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