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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 423 · 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 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) blinks 500 times (d) turns the LED off
  3. 3.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds is a wait of 0.5 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 2.9 seconds?
  6. 6.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 100 (d) 10
  7. 7.⏱️ How many milliseconds is a wait of 3.7 seconds?
  8. 8.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ How many milliseconds is a wait of 5 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 2.3 seconds?
  13. 13.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 4.9 seconds?
  18. 18.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 12 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 2 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  26. 26.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 1550 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 1.1 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 4 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 1.5 seconds?
  37. 37.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  38. 38.⏱️ How many milliseconds is a wait of 0.1 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 3.5 seconds?
  40. 40.⏱️ A program says “wait 9250 ms”. How many seconds is that? =

Answer key

  1. 1050
  2. pauses for half a second
  3. 7000
  4. 500
  5. 2900
  6. 1000
  7. 3700
  8. 2800
  9. 5000
  10. 200
  11. 900
  12. 2300
  13. 12800
  14. 1250
  15. 40
  16. 600
  17. 4900
  18. 6.5
  19. 4.25
  20. 30
  21. 16
  22. 1
  23. 8
  24. 40
  25. 20
  26. 8
  27. 0.5
  28. 600
  29. 1
  30. 1350
  31. 1100
  32. 1750
  33. 1400
  34. 8
  35. 25
  36. 1500
  37. 5.25
  38. 100
  39. 3500
  40. 9.25

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