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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 268 · 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 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 2.2 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 1.7 seconds?
  8. 8.⏱️ 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
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  14. 14.⏱️ How many milliseconds is a wait of 3.3 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  16. 16.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  23. 23.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 12 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 3.9 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  39. 39.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 7 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?

Answer key

  1. 6
  2. 2200
  3. 1250
  4. 2.75
  5. 600
  6. 7.75
  7. 1700
  8. pauses for half a second
  9. 150
  10. 12600
  11. 1200
  12. 1450
  13. 1000
  14. 3300
  15. 20
  16. 7
  17. 1050
  18. 1150
  19. 1.5
  20. 7200
  21. 3
  22. 40
  23. 4200
  24. 1200
  25. 5600
  26. 5
  27. 250
  28. 10
  29. 6
  30. 14
  31. 1450
  32. 4800
  33. 1000
  34. 450
  35. 10
  36. 3900
  37. 750
  38. 0.25
  39. 4.25
  40. 7000

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