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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 574 · 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.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ 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
  4. 4.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 10 (d) 100
  8. 8.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ How many milliseconds is a wait of 3.5 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ How many milliseconds is a wait of 4.7 seconds?
  12. 12.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 1.3 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 9 seconds?
  18. 18.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 2.9 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 0.2 seconds?
  27. 27.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 3.6 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 4.3 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.9 seconds?
  33. 33.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 1.4 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1800 ms }
    How many times does the LED blink in 12 seconds?
  37. 37.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 4.1 seconds?

Answer key

  1. 3.5
  2. 1150
  3. pauses for half a second
  4. 3.25
  5. 3
  6. 10500
  7. 1000
  8. 1150
  9. 3500
  10. 850
  11. 4700
  12. 3000
  13. 10
  14. 900
  15. 1800
  16. 1300
  17. 18
  18. 4000
  19. 1200
  20. 1100
  21. 9.25
  22. 4500
  23. 3000
  24. 2900
  25. 28
  26. 200
  27. 3200
  28. 3600
  29. 1550
  30. 7200
  31. 4300
  32. 1900
  33. 8000
  34. 750
  35. 1400
  36. 6
  37. 8800
  38. 12600
  39. 6000
  40. 4100

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