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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 751 · 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.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 18 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 5 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 6 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 2.2 seconds?
  8. 8.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) turns the LED off (d) blinks 500 times
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 2.9 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ How many milliseconds is a wait of 1.3 seconds?
  21. 21.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 2.3 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 1.6 seconds?
  25. 25.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  27. 27.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 18 seconds?
  29. 29.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 3.5 seconds?
  32. 32.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  33. 33.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ How many milliseconds is a wait of 3.9 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 2.1 seconds?
  38. 38.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 5
  2. 550
  3. 45
  4. 10
  5. 400
  6. 6
  7. 2200
  8. pauses for half a second
  9. 1050
  10. 1800
  11. 350
  12. 3400
  13. 0.25
  14. 11000
  15. 700
  16. 9.25
  17. 2900
  18. 1150
  19. 1600
  20. 1300
  21. 1.25
  22. 800
  23. 2300
  24. 1600
  25. 4800
  26. 10
  27. 1.75
  28. 9
  29. 8.75
  30. 10
  31. 3500
  32. 1000
  33. 650
  34. 3900
  35. 50
  36. 40
  37. 2100
  38. 14000
  39. 2000
  40. 1050

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