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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 565 · 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 9250 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 4.1 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 1.7 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) pauses for half a second (d) turns the LED off
  12. 12.⏱️ How many milliseconds is a wait of 3.9 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds is a wait of 3.5 seconds?
  16. 16.⏱️ How many milliseconds is a wait of 3.8 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 14 seconds?
  18. 18.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 4.9 seconds?
  20. 20.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  22. 22.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 4.2 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 10 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 4 seconds?
  31. 31.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?

Answer key

  1. 9.25
  2. 4100
  3. 24
  4. 650
  5. 1700
  6. 900
  7. 10
  8. 850
  9. 3.25
  10. 1300
  11. pauses for half a second
  12. 3900
  13. 40
  14. 1350
  15. 3500
  16. 3800
  17. 35
  18. 3000
  19. 4900
  20. 4200
  21. 1000
  22. 300
  23. 4200
  24. 400
  25. 2400
  26. 250
  27. 14000
  28. 2.75
  29. 20
  30. 4000
  31. 4500
  32. 2000
  33. 8
  34. 0.75
  35. 4
  36. 800
  37. 5
  38. 1850
  39. 4
  40. 5600

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