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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 482 · 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.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) turns the LED off (d) pauses for half a second
  2. 2.⏱️ How many milliseconds is a wait of 0.4 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  4. 4.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  5. 5.⏱️ How many milliseconds is a wait of 2.4 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 0.1 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 2.7 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  9. 9.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 3.4 seconds?
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 20 seconds?
  17. 17.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 1.2 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 4.1 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 4 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 1.4 seconds?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?

Answer key

  1. pauses for half a second
  2. 400
  3. 1000
  4. 5.25
  5. 2400
  6. 100
  7. 2700
  8. 50
  9. 3600
  10. 3900
  11. 1100
  12. 3400
  13. 4500
  14. 500
  15. 3.75
  16. 10
  17. 1.5
  18. 5000
  19. 8
  20. 850
  21. 12
  22. 800
  23. 2400
  24. 2
  25. 1000
  26. 600
  27. 750
  28. 400
  29. 1050
  30. 400
  31. 1200
  32. 4100
  33. 20
  34. 4000
  35. 45
  36. 1400
  37. 1200
  38. 800
  39. 6.25
  40. 3000

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