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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 598 · 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 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 1300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 8 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  4. 4.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 8 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 1.1 seconds?
  6. 6.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) turns the LED off (d) waits 500 seconds
  7. 7.⏱️ How many milliseconds is a wait of 4.8 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 2.3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 3 seconds?
  10. 10.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 14 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  16. 16.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 1 second?
  19. 19.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  20. 20.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 0.2 seconds?
  23. 23.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 0.8 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 2.6 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  31. 31.⏱️ How many milliseconds is a wait of 1.4 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.3 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ How many milliseconds is a wait of 4.4 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 12
  2. 4
  3. 1000
  4. 8
  5. 1100
  6. pauses for half a second
  7. 4800
  8. 2300
  9. 3
  10. 1.75
  11. 35
  12. 700
  13. 3000
  14. 1100
  15. 6
  16. 900
  17. 10
  18. 1
  19. 1
  20. 4000
  21. 20
  22. 200
  23. 3000
  24. 800
  25. 2600
  26. 750
  27. 5.75
  28. 1100
  29. 1000
  30. 9.75
  31. 1400
  32. 1300
  33. 1100
  34. 4400
  35. 400
  36. 12
  37. 150
  38. 10
  39. 5000
  40. 5200

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