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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 61 · 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.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  3. 3.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 4.4 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 4 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  13. 13.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  16. 16.⏱️ How many milliseconds is a wait of 1.4 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 20 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 0.7 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 6 seconds?
  33. 33.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 8 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 4.8 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 0.5 seconds?
  40. 40.⏱️ A program says “wait 750 ms”. How many seconds is that? =

Answer key

  1. pauses for half a second
  2. 1000
  3. 6
  4. 4400
  5. 1250
  6. 400
  7. 1.25
  8. 850
  9. 1.75
  10. 3300
  11. 4
  12. 32
  13. 8
  14. 850
  15. 4
  16. 1400
  17. 750
  18. 700
  19. 1650
  20. 10
  21. 700
  22. 2
  23. 8
  24. 600
  25. 8000
  26. 0.25
  27. 9.25
  28. 700
  29. 40
  30. 8
  31. 1100
  32. 3
  33. 5400
  34. 16
  35. 1100
  36. 4800
  37. 10
  38. 35
  39. 500
  40. 0.75

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