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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 491 · 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.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  2. 2.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  4. 4.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 14 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  7. 7.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  9. 9.⏱️ How many milliseconds is a wait of 2.4 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 0.8 seconds?
  11. 11.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  12. 12.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 2.2 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ How many milliseconds is a wait of 0.5 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  22. 22.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 1 seconds?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 0.2 seconds?
  27. 27.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 2.6 seconds?
  29. 29.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 1100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 4 seconds?
  32. 32.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ How many milliseconds is a wait of 4.8 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  37. 37.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1000
  2. 2200
  3. 3.5
  4. 7.5
  5. 35
  6. 15
  7. 3600
  8. 8.5
  9. 2400
  10. 800
  11. 0.5
  12. pauses for half a second
  13. 30
  14. 2200
  15. 3
  16. 1250
  17. 3200
  18. 500
  19. 1600
  20. 1150
  21. 25
  22. 0.75
  23. 4000
  24. 1000
  25. 5200
  26. 200
  27. 2.5
  28. 2600
  29. 5100
  30. 1
  31. 4000
  32. 4.5
  33. 950
  34. 4800
  35. 4800
  36. 12
  37. 5600
  38. 1300
  39. 3200
  40. 3600

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