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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 428 · 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 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) blinks 500 times (d) turns the LED off
  3. 3.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 2.4 seconds?
  5. 5.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  6. 6.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  10. 10.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 2.9 seconds?
  12. 12.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ How many milliseconds is a wait of 3.6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 8 seconds?
  15. 15.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  16. 16.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ How many milliseconds is a wait of 1.2 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  20. 20.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  21. 21.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  24. 24.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  25. 25.⏱️ repeat 10 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 3.8 seconds?
  27. 27.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ How many milliseconds is a wait of 0.3 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  37. 37.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ How many milliseconds is a wait of 2.1 seconds?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 2000 ms”. How many seconds is that? =

Answer key

  1. 3600
  2. pauses for half a second
  3. 1500
  4. 2400
  5. 6.5
  6. 3600
  7. 10800
  8. 9000
  9. 8
  10. 4.75
  11. 2900
  12. 3600
  13. 3600
  14. 8
  15. 1000
  16. 3600
  17. 1200
  18. 600
  19. 3.5
  20. 8.25
  21. 7200
  22. 4
  23. 7.75
  24. 9.25
  25. 9000
  26. 3800
  27. 1400
  28. 6
  29. 800
  30. 300
  31. 2
  32. 0.75
  33. 1800
  34. 10000
  35. 700
  36. 3.25
  37. 15300
  38. 2100
  39. 3600
  40. 2

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