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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 832 · 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 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  4. 4.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  8. 8.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ How many milliseconds is a wait of 2.4 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 14 seconds?
  15. 15.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 0.1 seconds?
  20. 20.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  21. 21.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  26. 26.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 14 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 3.1 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  33. 33.⏱️ How many milliseconds is a wait of 0.9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  36. 36.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?

Answer key

  1. 9800
  2. 8.75
  3. 1000
  4. 5.75
  5. 1100
  6. 3400
  7. pauses for half a second
  8. 3.75
  9. 500
  10. 1700
  11. 3200
  12. 2400
  13. 1300
  14. 7
  15. 9.75
  16. 7
  17. 2
  18. 20
  19. 100
  20. 3.25
  21. 8400
  22. 1150
  23. 3900
  24. 4
  25. 2
  26. 1.75
  27. 950
  28. 7
  29. 3100
  30. 10
  31. 1250
  32. 7.75
  33. 900
  34. 650
  35. 2.25
  36. 2600
  37. 1400
  38. 700
  39. 3500
  40. 2700

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