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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 315 · 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 8500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 4.6 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  6. 6.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  8. 8.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  9. 9.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 2.2 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  14. 14.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 0.8 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 2.3 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 1 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 3 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 0.4 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 0.5 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 16 seconds?
  29. 29.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 1.1 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 18 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 2 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 8.5
  2. 4600
  3. 8
  4. 1600
  5. pauses for half a second
  6. 2
  7. 1000
  8. 0.75
  9. 11700
  10. 1200
  11. 1250
  12. 2200
  13. 20
  14. 4.25
  15. 900
  16. 750
  17. 8
  18. 800
  19. 2300
  20. 800
  21. 1000
  22. 600
  23. 5.75
  24. 1150
  25. 3
  26. 400
  27. 500
  28. 8
  29. 5
  30. 1100
  31. 4
  32. 1100
  33. 5600
  34. 1450
  35. 9
  36. 2
  37. 35
  38. 10
  39. 14
  40. 750

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