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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 595 · 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.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  3. 3.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  6. 6.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  8. 8.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  11. 11.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 0.5 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 1.4 seconds?
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1250 ms }
    How many times does the LED blink in 6 seconds?
  16. 16.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 10 seconds?
  18. 18.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 3.3 seconds?
  20. 20.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 1.3 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 0.9 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 1 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.1 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  35. 35.⏱️ How many milliseconds is a wait of 3.6 seconds?
  36. 36.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?

Answer key

  1. 1050
  2. 1.75
  3. 7200
  4. 1000
  5. 45
  6. pauses for half a second
  7. 50
  8. 10800
  9. 0.5
  10. 1000
  11. 3.5
  12. 500
  13. 1400
  14. 3600
  15. 3
  16. 3.75
  17. 10
  18. 7200
  19. 3300
  20. 5400
  21. 950
  22. 6000
  23. 300
  24. 1300
  25. 900
  26. 900
  27. 2.25
  28. 20
  29. 150
  30. 1600
  31. 1000
  32. 1100
  33. 10
  34. 5
  35. 3600
  36. 5.75
  37. 6000
  38. 2.5
  39. 5400
  40. 6

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