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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 311 · 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 150 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 4.5 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 16 seconds?
  5. 5.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ 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
  10. 10.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 20 seconds?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 10 (d) 1000
  13. 13.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 2.6 seconds?
  19. 19.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  20. 20.⏱️ How many milliseconds is a wait of 1.9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 0.3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 0.7 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 9 seconds?
  38. 38.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?

Answer key

  1. 350
  2. 3200
  3. 4500
  4. 8
  5. 1.25
  6. 950
  7. 450
  8. 150
  9. pauses for half a second
  10. 1350
  11. 10
  12. 1000
  13. 1100
  14. 2.25
  15. 1350
  16. 1400
  17. 5.25
  18. 2600
  19. 8.25
  20. 1900
  21. 1000
  22. 1
  23. 1350
  24. 300
  25. 900
  26. 15
  27. 1000
  28. 1050
  29. 300
  30. 25
  31. 3
  32. 700
  33. 2
  34. 3.75
  35. 1.75
  36. 2
  37. 9
  38. 3.25
  39. 3000
  40. 3400

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