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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 366 · 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 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  3. 3.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 1.7 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  9. 9.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  10. 10.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ How many milliseconds is a wait of 1.3 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 2.1 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 0.5 seconds?
  14. 14.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ How many milliseconds is a wait of 4.3 seconds?
  16. 16.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  18. 18.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 1500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 12 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 0.3 seconds?
  26. 26.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  28. 28.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  29. 29.⏱️ How many milliseconds is a wait of 4 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 5 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 0.6 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 1 second?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  36. 36.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  38. 38.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?

Answer key

  1. 8000
  2. 1000
  3. 8
  4. 200
  5. 0.25
  6. 1700
  7. 500
  8. 10
  9. pauses for half a second
  10. 3200
  11. 1300
  12. 2100
  13. 500
  14. 6000
  15. 4300
  16. 2800
  17. 40
  18. 7800
  19. 20
  20. 850
  21. 6
  22. 850
  23. 3600
  24. 4
  25. 300
  26. 7.75
  27. 4
  28. 8.25
  29. 4000
  30. 5000
  31. 600
  32. 1
  33. 32
  34. 5
  35. 8.5
  36. 7200
  37. 6.75
  38. 1600
  39. 1.5
  40. 24

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