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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 329 · 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.⏱️ How many milliseconds is a wait of 1.2 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 4.8 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 8 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  9. 9.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 1000 (d) 10
  12. 12.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  14. 14.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 5 seconds?
  16. 16.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 10 seconds?
  18. 18.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 3.8 seconds?
  20. 20.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 2.1 seconds?
  22. 22.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ How many milliseconds is a wait of 3.1 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 6 seconds?
  30. 30.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  31. 31.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 1.3 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 12 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 2500 ms”. How many seconds is that? =

Answer key

  1. 1200
  2. 24
  3. 4800
  4. 1150
  5. 1200
  6. 8
  7. 1050
  8. pauses for half a second
  9. 5
  10. 24
  11. 1000
  12. 1100
  13. 15
  14. 2.25
  15. 10
  16. 11700
  17. 10
  18. 1
  19. 3800
  20. 0.75
  21. 2100
  22. 5000
  23. 3100
  24. 500
  25. 8.5
  26. 30
  27. 550
  28. 10
  29. 12
  30. 5.75
  31. 6
  32. 1300
  33. 8
  34. 1000
  35. 6
  36. 650
  37. 10
  38. 1200
  39. 150
  40. 2.5

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