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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 66 · 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 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 3.6 seconds?
  3. 3.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 10 (d) 100
  5. 5.⏱️ How many milliseconds is a wait of 4.3 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 0.5 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 1.8 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 2.1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  12. 12.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  14. 14.⏱️ How many milliseconds is a wait of 1.3 seconds?
  15. 15.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 1.6 seconds?
  18. 18.⏱️ 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
  19. 19.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 3.2 seconds?
  25. 25.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 2.6 seconds?
  32. 32.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 1.4 seconds?
  40. 40.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?

Answer key

  1. 16
  2. 3600
  3. 7.75
  4. 1000
  5. 4300
  6. 950
  7. 500
  8. 10
  9. 1800
  10. 2100
  11. 35
  12. 11900
  13. 7.5
  14. 1300
  15. 8.25
  16. 0.5
  17. 1600
  18. pauses for half a second
  19. 1700
  20. 6
  21. 1450
  22. 850
  23. 10
  24. 3200
  25. 1.75
  26. 900
  27. 1400
  28. 2800
  29. 850
  30. 3600
  31. 2600
  32. 5.5
  33. 2200
  34. 600
  35. 18
  36. 700
  37. 1000
  38. 5400
  39. 1400
  40. 7000

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