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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 684 · 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 500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 2.2 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 16 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 3.7 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 3.6 seconds?
  7. 7.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  9. 9.⏱️ How many milliseconds is a wait of 1.7 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 5 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 1.6 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 0.6 seconds?
  26. 26.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  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.⏱️ How many milliseconds is a wait of 4.3 seconds?
  31. 31.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) waits 500 seconds (d) turns the LED off
  32. 32.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  33. 33.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 4.7 seconds?
  35. 35.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 0.8 seconds?
  37. 37.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?

Answer key

  1. 0.5
  2. 2200
  3. 8
  4. 3700
  5. 45
  6. 3600
  7. 5000
  8. 1000
  9. 1700
  10. 1500
  11. 1550
  12. 8
  13. 1650
  14. 1800
  15. 3
  16. 1100
  17. 5
  18. 450
  19. 1600
  20. 24
  21. 1000
  22. 3500
  23. 6
  24. 16
  25. 600
  26. 1200
  27. 0.75
  28. 1200
  29. 40
  30. 4300
  31. pauses for half a second
  32. 8.25
  33. 2
  34. 4700
  35. 1000
  36. 800
  37. 6300
  38. 650
  39. 10000
  40. 4

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