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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 529 · 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) 100 (b) 10 (c) 60 (d) 1000
  2. 2.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 1 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  8. 8.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 2.8 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 1050 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 3.8 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 10 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ How many milliseconds is a wait of 3.1 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 4.9 seconds?
  22. 22.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 1.9 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 0.1 seconds?
  28. 28.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  31. 31.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 2.1 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 3.9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 8 seconds?
  36. 36.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 14 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 0.2 seconds?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 800 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 4250 ms”. How many seconds is that? =

Answer key

  1. 1000
  2. 2200
  3. 1.5
  4. 1000
  5. pauses for half a second
  6. 950
  7. 24
  8. 4500
  9. 950
  10. 550
  11. 40
  12. 2800
  13. 3
  14. 8
  15. 3800
  16. 5
  17. 1350
  18. 3100
  19. 35
  20. 300
  21. 4900
  22. 1500
  23. 1700
  24. 1050
  25. 1800
  26. 1900
  27. 100
  28. 5.75
  29. 7000
  30. 5
  31. 6.75
  32. 2100
  33. 3900
  34. 700
  35. 8
  36. 0.25
  37. 7
  38. 200
  39. 16000
  40. 4.25

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