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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 582 · 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 400 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 1.8 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 1.5 seconds?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  8. 8.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) turns the LED off (d) blinks 500 times
  9. 9.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1100 ms }
    How many times does the LED blink in 16 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 20 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 5 seconds?
  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.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 4.4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.2 seconds?
  27. 27.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 5 seconds?
  31. 31.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 4 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ How many milliseconds is a wait of 0.2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 1250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 6 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 7 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  39. 39.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 700
  2. 600
  3. 7.5
  4. 1800
  5. 3
  6. 1500
  7. 1000
  8. pauses for half a second
  9. 8
  10. 8
  11. 50
  12. 7200
  13. 1250
  14. 1200
  15. 10
  16. 5
  17. 8
  18. 4200
  19. 7700
  20. 1150
  21. 1400
  22. 2.25
  23. 4400
  24. 1450
  25. 2.75
  26. 2200
  27. 7000
  28. 13000
  29. 12
  30. 5000
  31. 5600
  32. 4000
  33. 1050
  34. 200
  35. 450
  36. 3
  37. 7
  38. 24
  39. 0.75
  40. 1200

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