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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 216 · 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 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  4. 4.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 4.5 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  11. 11.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 4 seconds?
  13. 13.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  16. 16.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  17. 17.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 1.3 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 3.9 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 1.7 seconds?
  23. 23.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 1 second?
  26. 26.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ How many milliseconds is a wait of 0.7 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 2.5 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 3.7 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 1.2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  39. 39.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 800
  2. 1400
  3. pauses for half a second
  4. 6000
  5. 8.5
  6. 1.5
  7. 4500
  8. 650
  9. 7.75
  10. 24
  11. 4000
  12. 2
  13. 2000
  14. 6
  15. 20
  16. 1000
  17. 5
  18. 750
  19. 1300
  20. 650
  21. 3900
  22. 1700
  23. 6.75
  24. 40
  25. 1
  26. 5.5
  27. 10
  28. 2200
  29. 700
  30. 1300
  31. 2500
  32. 3700
  33. 2
  34. 1200
  35. 1400
  36. 4500
  37. 1350
  38. 32
  39. 12000
  40. 500

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