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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 559 · 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.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  2. 2.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  5. 5.⏱️ 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
  6. 6.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 1900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 18 seconds?
  8. 8.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ How many milliseconds is a wait of 3.5 seconds?
  10. 10.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 2.6 seconds?
  12. 12.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  13. 13.⏱️ How many milliseconds is a wait of 3.6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 1.3 seconds?
  17. 17.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 2.9 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 0.8 seconds?
  24. 24.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  26. 26.⏱️ How many milliseconds is a wait of 2.8 seconds?
  27. 27.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  29. 29.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  38. 38.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 9
  2. 1800
  3. 4.5
  4. 3
  5. pauses for half a second
  6. 600
  7. 9
  8. 2600
  9. 3500
  10. 4
  11. 2600
  12. 4.25
  13. 3600
  14. 1800
  15. 1500
  16. 1300
  17. 1.5
  18. 1200
  19. 7200
  20. 2.25
  21. 32
  22. 2900
  23. 800
  24. 3600
  25. 5
  26. 2800
  27. 6400
  28. 6
  29. 5.25
  30. 35
  31. 2
  32. 900
  33. 5400
  34. 4000
  35. 2000
  36. 11000
  37. 1000
  38. 0.25
  39. 8
  40. 750

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