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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 885 · 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.⏱️ 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
  2. 2.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ How many milliseconds is a wait of 0.3 seconds?
  4. 4.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 10 (d) 100
  8. 8.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 2.1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 4.1 seconds?
  15. 15.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  16. 16.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  24. 24.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 6 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 3.6 seconds?
  28. 28.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 2.8 seconds?
  35. 35.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 2.2 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?

Answer key

  1. pauses for half a second
  2. 350
  3. 300
  4. 5500
  5. 100
  6. 3
  7. 1000
  8. 3.25
  9. 1200
  10. 2100
  11. 1400
  12. 1550
  13. 1250
  14. 4100
  15. 5.75
  16. 3600
  17. 3900
  18. 800
  19. 1550
  20. 4.5
  21. 1300
  22. 1250
  23. 1.5
  24. 2.75
  25. 6
  26. 3
  27. 3600
  28. 8
  29. 700
  30. 4000
  31. 5
  32. 25
  33. 25
  34. 2800
  35. 1.75
  36. 2200
  37. 650
  38. 5600
  39. 8
  40. 4000

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