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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 275 · 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.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  3. 3.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) turns the LED off (d) pauses for half a second
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 1.4 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 7 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  9. 9.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 3.9 seconds?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  13. 13.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 4 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  19. 19.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 3.8 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 3.3 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 2.7 seconds?
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 1 seconds?
  29. 29.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  38. 38.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?

Answer key

  1. 750
  2. 2.5
  3. 11000
  4. pauses for half a second
  5. 15
  6. 1400
  7. 7
  8. 12
  9. 1.75
  10. 28
  11. 3900
  12. 1000
  13. 2
  14. 7.5
  15. 0.25
  16. 20
  17. 4000
  18. 8
  19. 11700
  20. 1.5
  21. 12
  22. 3800
  23. 3300
  24. 1150
  25. 2700
  26. 18000
  27. 6.5
  28. 1000
  29. 4.5
  30. 500
  31. 3
  32. 1050
  33. 50
  34. 2
  35. 8.25
  36. 800
  37. 1
  38. 6300
  39. 8400
  40. 6400

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