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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 206 · 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) 60 (b) 1000 (c) 10 (d) 100
  2. 2.⏱️ How many milliseconds is a wait of 4.7 seconds?
  3. 3.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  8. 8.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  9. 9.⏱️ How many milliseconds is a wait of 2.4 seconds?
  10. 10.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  13. 13.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  14. 14.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  16. 16.⏱️ How many milliseconds is a wait of 3.3 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.3 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  21. 21.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  25. 25.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  29. 29.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 1.2 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 3 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 1200 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  36. 36.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ How many milliseconds is a wait of 0.1 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 1.6 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 5 seconds?

Answer key

  1. 1000
  2. 4700
  3. 4.5
  4. 1250
  5. 6400
  6. 2800
  7. 25
  8. 9
  9. 2400
  10. 2.75
  11. 1250
  12. 5.5
  13. pauses for half a second
  14. 9.5
  15. 5
  16. 3300
  17. 12
  18. 1800
  19. 1300
  20. 15
  21. 9.25
  22. 10400
  23. 1.75
  24. 12
  25. 14400
  26. 3.25
  27. 0.75
  28. 25
  29. 5600
  30. 200
  31. 1200
  32. 1150
  33. 3
  34. 1
  35. 1
  36. 0.5
  37. 750
  38. 100
  39. 1600
  40. 5000

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