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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 334 · 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 650 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  4. 4.⏱️ 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
  5. 5.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  10. 10.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 1.2 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ How many milliseconds is a wait of 3.6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 2.2 seconds?
  17. 17.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  22. 22.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 1.4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 2.5 seconds?
  26. 26.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ How many milliseconds is a wait of 0.1 seconds?
  31. 31.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  33. 33.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 4.9 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 2.7 seconds?
  39. 39.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 4 seconds?

Answer key

  1. 950
  2. 950
  3. 1000
  4. pauses for half a second
  5. 2800
  6. 0.25
  7. 1200
  8. 600
  9. 2.75
  10. 4.25
  11. 1200
  12. 1300
  13. 3600
  14. 30
  15. 1150
  16. 2200
  17. 1.5
  18. 20
  19. 1350
  20. 1000
  21. 8
  22. 4.75
  23. 1400
  24. 500
  25. 2500
  26. 6.5
  27. 9000
  28. 3.5
  29. 1650
  30. 100
  31. 4200
  32. 35
  33. 7700
  34. 6300
  35. 10400
  36. 1500
  37. 4900
  38. 2700
  39. 4.5
  40. 4

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