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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 374 · 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 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  3. 3.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 100 (d) 1000
  5. 5.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  6. 6.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  8. 8.⏱️ How many milliseconds is a wait of 3.5 seconds?
  9. 9.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 0.6 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  12. 12.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 2.7 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 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 4 seconds?
  21. 21.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 9 seconds?
  26. 26.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds is a wait of 1 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 3 seconds?
  30. 30.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 4 seconds?

Answer key

  1. 900
  2. 1.75
  3. pauses for half a second
  4. 1000
  5. 8
  6. 11700
  7. 2
  8. 3500
  9. 9600
  10. 600
  11. 25
  12. 10800
  13. 2
  14. 2700
  15. 400
  16. 1500
  17. 5.5
  18. 6500
  19. 50
  20. 4000
  21. 4.5
  22. 3200
  23. 750
  24. 0.25
  25. 9
  26. 5.75
  27. 1150
  28. 1000
  29. 3000
  30. 3000
  31. 2
  32. 9600
  33. 50
  34. 8100
  35. 10
  36. 40
  37. 40
  38. 650
  39. 16
  40. 2

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