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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 399 · 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.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  3. 3.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  4. 4.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  5. 5.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  8. 8.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 4.8 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 1 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 3.1 seconds?
  13. 13.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  14. 14.⏱️ How many milliseconds is a wait of 3.8 seconds?
  15. 15.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 4.5 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 2 seconds?
  20. 20.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ How many milliseconds is a wait of 3 seconds?
  24. 24.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 3.6 seconds?
  36. 36.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1250
  2. 10
  3. 8
  4. pauses for half a second
  5. 15
  6. 9
  7. 1000
  8. 1300
  9. 5.25
  10. 4800
  11. 1000
  12. 3100
  13. 5.75
  14. 3800
  15. 4000
  16. 11900
  17. 2.75
  18. 4500
  19. 2000
  20. 3200
  21. 600
  22. 6000
  23. 3000
  24. 11200
  25. 4800
  26. 40
  27. 10800
  28. 1300
  29. 3600
  30. 15
  31. 500
  32. 1450
  33. 7800
  34. 1050
  35. 3600
  36. 1600
  37. 600
  38. 1500
  39. 9.5
  40. 3300

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