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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 424 · 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.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 2.5 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 0.8 seconds?
  4. 4.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 5 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 3.2 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ How many milliseconds is a wait of 1.9 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ 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
  13. 13.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  18. 18.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 12 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 4.5 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  31. 31.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  32. 32.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 3.9 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 3 seconds?

Answer key

  1. 1.5
  2. 2500
  3. 800
  4. 2.75
  5. 30
  6. 5000
  7. 3200
  8. 1050
  9. 1900
  10. 700
  11. 2700
  12. pauses for half a second
  13. 1150
  14. 3000
  15. 1050
  16. 6300
  17. 1000
  18. 2
  19. 1.25
  20. 30
  21. 1300
  22. 8100
  23. 1150
  24. 800
  25. 4500
  26. 12
  27. 350
  28. 4
  29. 3500
  30. 5
  31. 4.25
  32. 9
  33. 4
  34. 5
  35. 3900
  36. 1700
  37. 3600
  38. 3300
  39. 2200
  40. 3000

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