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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 726 · 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 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 100 (d) 10
  3. 3.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ 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
  5. 5.⏱️ How many milliseconds is a wait of 0.7 seconds?
  6. 6.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  7. 7.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  17. 17.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 1.2 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 4 seconds?
  21. 21.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  22. 22.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 1 seconds?
  24. 24.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 9 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 0.1 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 18 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 0.6 seconds?
  35. 35.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  36. 36.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 2 seconds?
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 550
  2. 1000
  3. 6000
  4. pauses for half a second
  5. 700
  6. 4
  7. 8
  8. 1050
  9. 8400
  10. 5
  11. 900
  12. 1050
  13. 2000
  14. 1150
  15. 800
  16. 8
  17. 12000
  18. 2.5
  19. 1200
  20. 4
  21. 9.5
  22. 5.5
  23. 1000
  24. 3600
  25. 4.5
  26. 6.5
  27. 9
  28. 100
  29. 250
  30. 2000
  31. 1200
  32. 9800
  33. 9
  34. 600
  35. 8.5
  36. 9
  37. 1650
  38. 2
  39. 2400
  40. 950

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