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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 572 · 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 seconds?
  2. 2.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds is a wait of 2.7 seconds?
  4. 4.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) turns the LED off (d) blinks 500 times
  5. 5.⏱️ How many milliseconds is a wait of 3.5 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 2.3 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 4.7 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  13. 13.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  15. 15.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 1900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  17. 17.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 20 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 0.6 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 3.3 seconds?
  24. 24.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.6 seconds?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 12 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 0.8 seconds?
  33. 33.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  36. 36.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  40. 40.⏱️ A program says “wait 5500 ms”. How many seconds is that? =

Answer key

  1. 2000
  2. 10
  3. 2700
  4. pauses for half a second
  5. 3500
  6. 12
  7. 2300
  8. 1500
  9. 6000
  10. 4700
  11. 1100
  12. 1000
  13. 3600
  14. 32
  15. 6400
  16. 1
  17. 1500
  18. 2600
  19. 50
  20. 600
  21. 28
  22. 6
  23. 3300
  24. 1
  25. 0.25
  26. 2600
  27. 11700
  28. 30
  29. 400
  30. 12
  31. 7.25
  32. 800
  33. 9.5
  34. 550
  35. 1.75
  36. 1800
  37. 2000
  38. 1100
  39. 5
  40. 5.5

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