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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 833 · 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 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 2.9 seconds?
  4. 4.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  5. 5.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 0.6 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 3.9 seconds?
  10. 10.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  12. 12.⏱️ How many milliseconds is a wait of 1.5 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 0.1 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  17. 17.⏱️ 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
  18. 18.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 10 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 4.7 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ How many milliseconds is a wait of 3.6 seconds?
  28. 28.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  30. 30.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 4 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  39. 39.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 20
  2. 16
  3. 2900
  4. 7
  5. 2.5
  6. 0.5
  7. 750
  8. 600
  9. 3900
  10. 6.25
  11. 1000
  12. 1500
  13. 100
  14. 850
  15. 10
  16. 3
  17. pauses for half a second
  18. 600
  19. 9000
  20. 4500
  21. 10
  22. 2
  23. 1250
  24. 450
  25. 4700
  26. 500
  27. 3600
  28. 3900
  29. 10
  30. 2800
  31. 4000
  32. 1050
  33. 6000
  34. 2700
  35. 1650
  36. 4000
  37. 1100
  38. 9.5
  39. 7.25
  40. 850

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