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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 987 · 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) 10 (b) 1000 (c) 100 (d) 60
  2. 2.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  4. 4.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  8. 8.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  12. 12.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ How many milliseconds is a wait of 2.6 seconds?
  14. 14.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 20 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 4 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 0.2 seconds?
  20. 20.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 1.3 seconds?
  23. 23.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 16 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  27. 27.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ How many milliseconds is a wait of 0.5 seconds?
  31. 31.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ How many milliseconds is a wait of 2.2 seconds?
  34. 34.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  36. 36.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1000
  2. 5.25
  3. 30
  4. pauses for half a second
  5. 3
  6. 3.75
  7. 15
  8. 5000
  9. 950
  10. 450
  11. 3.25
  12. 1150
  13. 2600
  14. 10
  15. 1000
  16. 400
  17. 50
  18. 2
  19. 200
  20. 10800
  21. 9.5
  22. 1300
  23. 5.75
  24. 40
  25. 40
  26. 12
  27. 0.75
  28. 3000
  29. 600
  30. 500
  31. 6.75
  32. 3600
  33. 2200
  34. 8.75
  35. 5
  36. 1400
  37. 2400
  38. 36
  39. 4
  40. 1050

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