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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 9 · 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 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 1200 ms }
    How many times does the LED blink in 20 seconds?
  3. 3.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  4. 4.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  8. 8.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  10. 10.⏱️ 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
  11. 11.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ How many milliseconds is a wait of 0.1 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 1600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  16. 16.⏱️ How many milliseconds is a wait of 4 seconds?
  17. 17.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 3.8 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 4.7 seconds?
  22. 22.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 0.5 seconds?
  24. 24.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  27. 27.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  30. 30.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ How many milliseconds is a wait of 3.4 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 4.4 seconds?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 1.4 seconds?
  37. 37.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  39. 39.⏱️ How many milliseconds is a wait of 3.2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 700
  2. 10
  3. 5.75
  4. 3200
  5. 0.75
  6. 6.75
  7. 1000
  8. 2000
  9. 12
  10. pauses for half a second
  11. 8000
  12. 100
  13. 4
  14. 1
  15. 3.75
  16. 4000
  17. 4200
  18. 9
  19. 3800
  20. 700
  21. 4700
  22. 2.5
  23. 500
  24. 0.5
  25. 650
  26. 2
  27. 550
  28. 4
  29. 40
  30. 6300
  31. 900
  32. 850
  33. 3400
  34. 4400
  35. 11200
  36. 1400
  37. 8.25
  38. 7.25
  39. 3200
  40. 1000

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