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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 233 · 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 8000 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  4. 4.⏱️ How many milliseconds is a wait of 3.8 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
  6. 6.⏱️ How many milliseconds is a wait of 3.3 seconds?
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 16 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  11. 11.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  13. 13.⏱️ How many milliseconds is a wait of 2.1 seconds?
  14. 14.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  17. 17.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 1 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 2.6 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 0.4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 4 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 2.8 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 4 seconds?
  30. 30.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  31. 31.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 0.9 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 3.2 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.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 4250 ms”. How many seconds is that? =

Answer key

  1. 8
  2. 15
  3. 1000
  4. 3800
  5. pauses for half a second
  6. 3300
  7. 1200
  8. 40
  9. 1300
  10. 18
  11. 1200
  12. 2.25
  13. 2100
  14. 3600
  15. 1550
  16. 6.25
  17. 6500
  18. 5400
  19. 900
  20. 1050
  21. 1000
  22. 2600
  23. 400
  24. 1700
  25. 9
  26. 4000
  27. 2800
  28. 1200
  29. 8
  30. 5.75
  31. 8.5
  32. 900
  33. 1500
  34. 350
  35. 3200
  36. 40
  37. 1450
  38. 5500
  39. 1600
  40. 4.25

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