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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 272 · 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.⏱️ How many milliseconds is a wait of 0.3 seconds?
  2. 2.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 2.1 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 2.7 seconds?
  5. 5.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
  8. 8.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  10. 10.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) blinks 500 times (d) turns the LED off
  11. 11.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 1 second?
  12. 12.⏱️ How many milliseconds is a wait of 0.7 seconds?
  13. 13.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 3 seconds?
  16. 16.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ How many milliseconds is a wait of 0.6 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 2.5 seconds?
  20. 20.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 3.8 seconds?
  22. 22.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  24. 24.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 4.3 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  29. 29.⏱️ How many milliseconds is a wait of 2 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 4.1 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?
  40. 40.⏱️ A program says “wait 3750 ms”. How many seconds is that? =

Answer key

  1. 300
  2. 9600
  3. 2100
  4. 2700
  5. 1000
  6. 2500
  7. 1000
  8. 8.5
  9. 20
  10. pauses for half a second
  11. 1
  12. 700
  13. 4
  14. 7800
  15. 3
  16. 5000
  17. 600
  18. 750
  19. 2500
  20. 3
  21. 3800
  22. 5.25
  23. 1
  24. 2800
  25. 2700
  26. 4300
  27. 1300
  28. 6.75
  29. 2000
  30. 5000
  31. 400
  32. 6800
  33. 1750
  34. 25
  35. 2000
  36. 4100
  37. 20
  38. 4000
  39. 2
  40. 3.75

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