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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 156 · 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 100 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  8. 8.⏱️ How many milliseconds is a wait of 4.3 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 4 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 3.6 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1100 ms }
    How many times does the LED blink in 20 seconds?
  12. 12.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  13. 13.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  15. 15.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 2.9 seconds?
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.9 seconds?
  20. 20.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 4.6 seconds?
  22. 22.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  27. 27.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  30. 30.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  32. 32.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 14 seconds?
  34. 34.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 18 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 0.4 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 2.2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?

Answer key

  1. 350
  2. 700
  3. 400
  4. 7700
  5. 800
  6. 9100
  7. 1000
  8. 4300
  9. 4000
  10. 3600
  11. 10
  12. pauses for half a second
  13. 5400
  14. 28
  15. 5500
  16. 1500
  17. 2900
  18. 6300
  19. 1900
  20. 10
  21. 4600
  22. 12000
  23. 3600
  24. 950
  25. 2.25
  26. 20
  27. 2
  28. 1600
  29. 40
  30. 12800
  31. 3
  32. 9.25
  33. 7
  34. 12800
  35. 45
  36. 400
  37. 750
  38. 1500
  39. 2200
  40. 5

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