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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 536 · 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 250 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 3.4 seconds?
  5. 5.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 20 seconds?
  8. 8.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) blinks 500 times (d) turns the LED off
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  11. 11.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  12. 12.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ How many milliseconds is a wait of 3.1 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  17. 17.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ How many milliseconds is a wait of 4.9 seconds?
  19. 19.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  20. 20.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  21. 21.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  25. 25.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  27. 27.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 1.2 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 2.4 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 4.7 seconds?
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ How many milliseconds is a wait of 2.1 seconds?
  39. 39.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  40. 40.⏱️ How many milliseconds is a wait of 4.1 seconds?

Answer key

  1. 1100
  2. 6
  3. 1400
  4. 3400
  5. 6500
  6. 18
  7. 10
  8. pauses for half a second
  9. 20
  10. 1000
  11. 5
  12. 8000
  13. 3100
  14. 24
  15. 800
  16. 10
  17. 6300
  18. 4900
  19. 1
  20. 0.5
  21. 5.25
  22. 1050
  23. 7200
  24. 5
  25. 10
  26. 36
  27. 7.5
  28. 1200
  29. 2400
  30. 25
  31. 1.75
  32. 4700
  33. 14400
  34. 9.25
  35. 1550
  36. 4.75
  37. 1500
  38. 2100
  39. 3.5
  40. 4100

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