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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 484 · 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 are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  2. 2.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) blinks 500 times (d) turns the LED off
  5. 5.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  6. 6.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ How many milliseconds is a wait of 4 seconds?
  10. 10.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  16. 16.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 3 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 3.5 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ How many milliseconds is a wait of 0.8 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  25. 25.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.2 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  33. 33.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 2.1 seconds?
  37. 37.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  38. 38.⏱️ How many milliseconds is a wait of 0.5 seconds?
  39. 39.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1000
  2. 550
  3. 9000
  4. pauses for half a second
  5. 8
  6. 10000
  7. 1800
  8. 7000
  9. 4000
  10. 2000
  11. 5500
  12. 3900
  13. 1050
  14. 1100
  15. 30
  16. 7200
  17. 900
  18. 3
  19. 3500
  20. 1300
  21. 5000
  22. 800
  23. 1150
  24. 5
  25. 3.25
  26. 2200
  27. 550
  28. 8.75
  29. 6000
  30. 10
  31. 10
  32. 2
  33. 7.5
  34. 4200
  35. 14000
  36. 2100
  37. 1.75
  38. 500
  39. 2.5
  40. 1300

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