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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 644 · 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 500 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 6 seconds?
  5. 5.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) blinks 500 times (d) waits 500 seconds
  7. 7.⏱️ How many milliseconds is a wait of 0.3 seconds?
  8. 8.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  9. 9.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 2.3 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 2.7 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  17. 17.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 8 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 1 second?
  19. 19.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ How many milliseconds is a wait of 4.9 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 4.8 seconds?
  22. 22.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 60 (d) 10
  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.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 3.3 seconds?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  33. 33.⏱️ How many milliseconds is a wait of 4.2 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 4.5 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  37. 37.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 550
  2. 1500
  3. 1200
  4. 6
  5. 6.5
  6. pauses for half a second
  7. 300
  8. 2.5
  9. 8
  10. 1150
  11. 25
  12. 1650
  13. 950
  14. 2300
  15. 2700
  16. 5
  17. 8
  18. 1
  19. 11700
  20. 4900
  21. 4800
  22. 7.75
  23. 1000
  24. 40
  25. 7.5
  26. 3300
  27. 13500
  28. 1450
  29. 9600
  30. 8
  31. 950
  32. 5
  33. 4200
  34. 1750
  35. 4500
  36. 25
  37. 9.5
  38. 1150
  39. 32
  40. 1300

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