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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 722 · 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 is a wait of 0.6 seconds?
  2. 2.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) turns the LED off (d) blinks 500 times
  3. 3.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ How many milliseconds is a wait of 2.9 seconds?
  7. 7.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  11. 11.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 0.4 seconds?
  13. 13.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  14. 14.⏱️ How many milliseconds is a wait of 3.2 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 10 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  17. 17.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  21. 21.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 100 (d) 1000
  23. 23.⏱️ How many milliseconds is a wait of 3.7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 9 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?

Answer key

  1. 600
  2. pauses for half a second
  3. 250
  4. 3
  5. 1400
  6. 2900
  7. 4.5
  8. 15
  9. 15
  10. 15
  11. 2
  12. 400
  13. 5.25
  14. 3200
  15. 10
  16. 40
  17. 0.75
  18. 750
  19. 3500
  20. 40
  21. 5400
  22. 1000
  23. 3700
  24. 1800
  25. 1.25
  26. 5.5
  27. 1.5
  28. 3200
  29. 1
  30. 5
  31. 2800
  32. 1450
  33. 30
  34. 18
  35. 1200
  36. 3600
  37. 1150
  38. 8.5
  39. 1400
  40. 2

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