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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 92 · 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.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds is a wait of 1 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 4.2 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 18 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 3 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 4 seconds?
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  12. 12.⏱️ How many milliseconds is a wait of 4.3 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  14. 14.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 0.8 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 3.6 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ How many milliseconds is a wait of 1.9 seconds?
  21. 21.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  24. 24.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ How many milliseconds is a wait of 4.8 seconds?
  27. 27.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  28. 28.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  36. 36.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 1.7 seconds?
  38. 38.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 6 seconds?
  40. 40.⏱️ A program says “wait 1750 ms”. How many seconds is that? =

Answer key

  1. 1500
  2. 3.75
  3. 1000
  4. 4200
  5. pauses for half a second
  6. 12
  7. 9
  8. 1250
  9. 3
  10. 2
  11. 1000
  12. 4300
  13. 32
  14. 8.75
  15. 1250
  16. 800
  17. 3600
  18. 600
  19. 600
  20. 1900
  21. 8
  22. 1200
  23. 4.25
  24. 2.25
  25. 1900
  26. 4800
  27. 6.5
  28. 0.5
  29. 2200
  30. 1100
  31. 8
  32. 800
  33. 950
  34. 18
  35. 2
  36. 15000
  37. 1700
  38. 6.25
  39. 12
  40. 1.75

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