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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 139 · 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 2.7 seconds?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  3. 3.⏱️ How many milliseconds is a wait of 1.3 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 1.2 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 3.5 seconds?
  6. 6.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ How many milliseconds is a wait of 0.9 seconds?
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 1.8 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 1 second?
  18. 18.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  19. 19.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 8 seconds?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 4.8 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 4.5 seconds?
  29. 29.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 16 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  37. 37.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 6 seconds?
  39. 39.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?

Answer key

  1. 2700
  2. 1000
  3. 1300
  4. 1200
  5. 3500
  6. 6.25
  7. 1300
  8. 10000
  9. 900
  10. 3600
  11. 1200
  12. 1800
  13. 950
  14. 1100
  15. 5000
  16. 0.75
  17. 1
  18. pauses for half a second
  19. 6400
  20. 7200
  21. 9000
  22. 16
  23. 8000
  24. 3400
  25. 8
  26. 4800
  27. 15
  28. 4500
  29. 3800
  30. 1600
  31. 3800
  32. 200
  33. 2
  34. 650
  35. 40
  36. 5
  37. 600
  38. 6
  39. 4
  40. 35

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