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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 494 · 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 6500 ms”. How many seconds is that? =
  2. 2.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  6. 6.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 5 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  13. 13.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 4 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 3.5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  20. 20.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  21. 21.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?
  27. 27.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  29. 29.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 12 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 2.2 seconds?
  40. 40.⏱️ A program says “wait 1750 ms”. How many seconds is that? =

Answer key

  1. 6.5
  2. 800
  3. 7700
  4. 8
  5. pauses for half a second
  6. 12000
  7. 550
  8. 5000
  9. 28
  10. 2
  11. 0.75
  12. 1000
  13. 1350
  14. 4
  15. 1050
  16. 9800
  17. 9.25
  18. 3500
  19. 5
  20. 2.75
  21. 3.25
  22. 1100
  23. 1250
  24. 850
  25. 4800
  26. 2
  27. 4
  28. 12
  29. 2400
  30. 5400
  31. 16
  32. 30
  33. 450
  34. 3
  35. 1250
  36. 3600
  37. 30
  38. 20
  39. 2200
  40. 1.75

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