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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 80 · 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) 60 (c) 10 (d) 1000
  2. 2.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 5 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 12 seconds?
  6. 6.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 4.4 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 9 seconds?
  14. 14.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  15. 15.⏱️ How many milliseconds is a wait of 0.8 seconds?
  16. 16.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ 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
  18. 18.⏱️ How many milliseconds is a wait of 2.8 seconds?
  19. 19.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  20. 20.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  22. 22.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  24. 24.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  25. 25.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 10 seconds?
  27. 27.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 1.6 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  30. 30.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ How many milliseconds is a wait of 2.6 seconds?
  34. 34.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  38. 38.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 7 seconds?

Answer key

  1. 1000
  2. 1250
  3. 850
  4. 5000
  5. 6
  6. 0.5
  7. 1600
  8. 4400
  9. 900
  10. 1000
  11. 900
  12. 8400
  13. 18
  14. 3
  15. 800
  16. 11000
  17. pauses for half a second
  18. 2800
  19. 1.5
  20. 1
  21. 20
  22. 9.25
  23. 3.75
  24. 10
  25. 6000
  26. 5
  27. 2700
  28. 1600
  29. 5
  30. 1300
  31. 8.75
  32. 2600
  33. 2600
  34. 5.25
  35. 10800
  36. 7800
  37. 10
  38. 4
  39. 40
  40. 14

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