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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 145 · 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) 60 (c) 1000 (d) 100
  2. 2.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  3. 3.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  4. 4.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  5. 5.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  6. 6.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds is a wait of 3.9 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 2 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 3.1 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 4.4 seconds?
  18. 18.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  22. 22.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  26. 26.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 6 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 16 seconds?
  29. 29.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ How many milliseconds is a wait of 1.2 seconds?
  31. 31.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  33. 33.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 0.8 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 3.6 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1000
  2. 0.25
  3. pauses for half a second
  4. 7.75
  5. 3
  6. 3600
  7. 3900
  8. 950
  9. 6.5
  10. 1000
  11. 450
  12. 2.75
  13. 700
  14. 2000
  15. 3100
  16. 600
  17. 4400
  18. 0.75
  19. 1200
  20. 4
  21. 40
  22. 1.25
  23. 1250
  24. 8100
  25. 2
  26. 4800
  27. 12
  28. 40
  29. 8000
  30. 1200
  31. 7000
  32. 20
  33. 9.5
  34. 9.25
  35. 100
  36. 800
  37. 30
  38. 9
  39. 3600
  40. 1700

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