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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 479 · 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.⏱️ How many milliseconds is a wait of 0.4 seconds?
  2. 2.⏱️ 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
  3. 3.⏱️ How many milliseconds is a wait of 4.6 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 1000 (d) 60
  5. 5.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 8 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 0.6 seconds?
  8. 8.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 3.9 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 1.4 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  16. 16.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 18 seconds?
  21. 21.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  25. 25.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ How many milliseconds is a wait of 2.8 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 16 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ How many milliseconds is a wait of 2.9 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 2.4 seconds?

Answer key

  1. 400
  2. pauses for half a second
  3. 4600
  4. 1000
  5. 8
  6. 900
  7. 600
  8. 3600
  9. 1000
  10. 5.5
  11. 1600
  12. 3900
  13. 1400
  14. 350
  15. 28
  16. 1800
  17. 900
  18. 750
  19. 6
  20. 9
  21. 1400
  22. 15
  23. 10
  24. 36
  25. 8400
  26. 4500
  27. 2800
  28. 40
  29. 1050
  30. 450
  31. 1
  32. 7000
  33. 1
  34. 9000
  35. 2.5
  36. 1400
  37. 1.75
  38. 800
  39. 2900
  40. 2400

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