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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 256 · 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 are in 1 second? (a) 100 (b) 60 (c) 1000 (d) 10
  2. 2.⏱️ How many milliseconds is a wait of 2.3 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  5. 5.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) turns the LED off (c) blinks 500 times (d) waits 500 seconds
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 3.2 seconds?
  13. 13.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 3.9 seconds?
  18. 18.⏱️ How many milliseconds is a wait of 1.5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 7 seconds?
  20. 20.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 9 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ How many milliseconds is a wait of 1.8 seconds?
  28. 28.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  29. 29.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 2.2 seconds?
  31. 31.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  39. 39.⏱️ How many milliseconds is a wait of 1.9 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 12 seconds?

Answer key

  1. 1000
  2. 2300
  3. 1400
  4. 5
  5. 7.5
  6. pauses for half a second
  7. 600
  8. 1800
  9. 6000
  10. 500
  11. 16
  12. 3200
  13. 5.5
  14. 2
  15. 0.75
  16. 1350
  17. 3900
  18. 1500
  19. 7
  20. 2000
  21. 5200
  22. 16
  23. 9
  24. 4
  25. 600
  26. 1150
  27. 1800
  28. 1.25
  29. 8.25
  30. 2200
  31. 6.75
  32. 18
  33. 1200
  34. 1150
  35. 800
  36. 4000
  37. 3
  38. 1.75
  39. 1900
  40. 30

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