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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 768 · 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 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  8. 8.⏱️ How many milliseconds is a wait of 3.8 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  11. 11.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  14. 14.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  17. 17.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 1.4 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  21. 21.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 3.1 seconds?
  23. 23.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ How many milliseconds is a wait of 4 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 12 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?

Answer key

  1. 550
  2. 800
  3. 25
  4. 1150
  5. 1500
  6. 2400
  7. pauses for half a second
  8. 3800
  9. 1050
  10. 1000
  11. 4800
  12. 3.5
  13. 40
  14. 1.25
  15. 1600
  16. 7.75
  17. 6.75
  18. 1400
  19. 12
  20. 20
  21. 5.75
  22. 3100
  23. 4800
  24. 1200
  25. 9600
  26. 450
  27. 1000
  28. 0.5
  29. 1600
  30. 2800
  31. 7700
  32. 9.25
  33. 3800
  34. 4000
  35. 350
  36. 9
  37. 6
  38. 1550
  39. 6000
  40. 11700

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