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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 39 · 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 2.6 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 0.8 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ How many milliseconds is a wait of 0.2 seconds?
  7. 7.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 10 seconds?
  9. 9.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  12. 12.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  15. 15.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  16. 16.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  18. 18.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  24. 24.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 1.5 seconds?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds is a wait of 2.9 seconds?
  29. 29.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) blinks 500 times (d) turns the LED off
  30. 30.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  33. 33.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 1500 ms”. How many seconds is that? =

Answer key

  1. 2600
  2. 650
  3. 5.75
  4. 800
  5. 1600
  6. 200
  7. 7200
  8. 10
  9. 3
  10. 2
  11. 20
  12. 3.5
  13. 1050
  14. 1000
  15. 9.25
  16. 7000
  17. 7
  18. 8
  19. 7.5
  20. 950
  21. 4800
  22. 350
  23. 6.25
  24. 5200
  25. 1500
  26. 2400
  27. 1550
  28. 2900
  29. pauses for half a second
  30. 6.5
  31. 650
  32. 14
  33. 3.75
  34. 2.75
  35. 800
  36. 9000
  37. 900
  38. 8100
  39. 4800
  40. 1.5

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