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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 194 · 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 are in 1 second? (a) 1000 (b) 60 (c) 10 (d) 100
  2. 2.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
  3. 3.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 1.4 seconds?
  5. 5.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 4.5 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ How many milliseconds is a wait of 0.9 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 18 seconds?
  12. 12.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 3.3 seconds?
  18. 18.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 3 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ How many milliseconds is a wait of 0.3 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 7 seconds?
  32. 32.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 14 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 2.8 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  38. 38.⏱️ How many milliseconds is a wait of 0.2 seconds?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 12 seconds?

Answer key

  1. 1000
  2. pauses for half a second
  3. 1600
  4. 1400
  5. 4.5
  6. 1500
  7. 4500
  8. 1500
  9. 900
  10. 10
  11. 45
  12. 2.25
  13. 800
  14. 10
  15. 300
  16. 8.75
  17. 3300
  18. 9.5
  19. 6.5
  20. 6
  21. 1750
  22. 6.75
  23. 20
  24. 8.5
  25. 1050
  26. 10000
  27. 150
  28. 1400
  29. 2400
  30. 300
  31. 7
  32. 6
  33. 9000
  34. 45
  35. 35
  36. 2800
  37. 2
  38. 200
  39. 11000
  40. 30

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