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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 314 · 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.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds is a wait of 0.4 seconds?
  3. 3.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 2.7 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 1.2 seconds?
  8. 8.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  9. 9.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 10 (d) 60
  10. 10.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ How many milliseconds is a wait of 0.6 seconds?
  12. 12.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 0.9 seconds?
  15. 15.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.1 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 1050 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 12 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 3.6 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 4 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 4.2 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 4.7 seconds?
  32. 32.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  33. 33.⏱️ How many milliseconds is a wait of 0.3 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 4.1 seconds?
  35. 35.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 3600
  2. 400
  3. 0.5
  4. 1400
  5. 35
  6. 2700
  7. 1200
  8. pauses for half a second
  9. 1000
  10. 9800
  11. 600
  12. 4000
  13. 15
  14. 900
  15. 5.25
  16. 9.75
  17. 1650
  18. 1200
  19. 1100
  20. 6
  21. 3600
  22. 950
  23. 5600
  24. 6400
  25. 40
  26. 4000
  27. 4200
  28. 1900
  29. 2.25
  30. 40
  31. 4700
  32. 8.5
  33. 300
  34. 4100
  35. 8400
  36. 1650
  37. 8
  38. 8800
  39. 1500
  40. 650

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