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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 149 · 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 1.1 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  3. 3.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  4. 4.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  5. 5.⏱️ How many milliseconds is a wait of 1 seconds?
  6. 6.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  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.⏱️ How many milliseconds is a wait of 0.8 seconds?
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 14 seconds?
  16. 16.⏱️ How many milliseconds is a wait of 3.2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 4.1 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 16 seconds?
  23. 23.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 1.9 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ How many milliseconds is a wait of 2.9 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 2 seconds?
  28. 28.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 8 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  34. 34.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  36. 36.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  37. 37.⏱️ How many milliseconds is a wait of 0.1 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 3.3 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 4.6 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 12 seconds?

Answer key

  1. 1100
  2. 2
  3. 9.25
  4. pauses for half a second
  5. 1000
  6. 6600
  7. 1000
  8. 1500
  9. 800
  10. 3900
  11. 5600
  12. 150
  13. 1100
  14. 1.75
  15. 35
  16. 3200
  17. 800
  18. 700
  19. 700
  20. 10
  21. 4100
  22. 8
  23. 16000
  24. 1900
  25. 1050
  26. 2900
  27. 2000
  28. 4800
  29. 1300
  30. 25
  31. 10
  32. 4
  33. 36
  34. 3600
  35. 10
  36. 9.75
  37. 100
  38. 3300
  39. 4600
  40. 6

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