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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 552 · 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 600 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 2 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 1.9 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  6. 6.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  7. 7.⏱️ 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
  8. 8.⏱️ How many milliseconds is a wait of 3.3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 4 seconds?
  10. 10.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  16. 16.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 3.1 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ How many milliseconds is a wait of 3.6 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 2.3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 3.8 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 2 seconds?
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 4.5 seconds?
  37. 37.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  39. 39.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1450
  2. 4
  3. 750
  4. 1900
  5. 14
  6. 5
  7. pauses for half a second
  8. 3300
  9. 2
  10. 4000
  11. 25
  12. 0.5
  13. 1.25
  14. 4200
  15. 1000
  16. 2
  17. 3100
  18. 25
  19. 500
  20. 3600
  21. 1000
  22. 1750
  23. 650
  24. 2300
  25. 1450
  26. 1150
  27. 5600
  28. 1550
  29. 3600
  30. 1050
  31. 3800
  32. 1
  33. 7200
  34. 1250
  35. 15
  36. 4500
  37. 3.25
  38. 6
  39. 7.75
  40. 1850

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