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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 658 · 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 are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  2. 2.⏱️ How many milliseconds is a wait of 0.8 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 2.2 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 0.5 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) waits 500 seconds (d) turns the LED off
  6. 6.⏱️ How many milliseconds is a wait of 1.8 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 9 seconds?
  9. 9.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  17. 17.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 3.1 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  25. 25.⏱️ How many milliseconds is a wait of 4.5 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 10 seconds?
  27. 27.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 3.9 seconds?
  29. 29.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  37. 37.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 1900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 18 seconds?
  39. 39.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 6 seconds?

Answer key

  1. 1000
  2. 800
  3. 2200
  4. 500
  5. pauses for half a second
  6. 1800
  7. 1250
  8. 9
  9. 8000
  10. 1600
  11. 4000
  12. 1.5
  13. 6.75
  14. 1300
  15. 3200
  16. 32
  17. 4.5
  18. 1200
  19. 50
  20. 1000
  21. 7.75
  22. 3100
  23. 32
  24. 1
  25. 4500
  26. 20
  27. 3200
  28. 3900
  29. 5.5
  30. 2
  31. 4800
  32. 1100
  33. 13000
  34. 15
  35. 800
  36. 4
  37. 2.5
  38. 9
  39. 11200
  40. 6

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