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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 40 · 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) 60 (c) 10 (d) 1000
  2. 2.⏱️ How many milliseconds is a wait of 2 seconds?
  3. 3.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) blinks 500 times (d) turns the LED off
  4. 4.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  7. 7.⏱️ repeat 7 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  9. 9.⏱️ How many milliseconds is a wait of 5 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 4.8 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 3.7 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 3.4 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 12 seconds?
  17. 17.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 0.1 seconds?
  21. 21.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 1.3 seconds?
  23. 23.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 1.9 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 2.5 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds is a wait of 0.5 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 4.9 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 0.6 seconds?
  31. 31.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 10 seconds?
  33. 33.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 4.6 seconds?
  37. 37.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  38. 38.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 3.2 seconds?

Answer key

  1. 1000
  2. 2000
  3. pauses for half a second
  4. 600
  5. 3.25
  6. 40
  7. 4200
  8. 2.75
  9. 5000
  10. 4800
  11. 3700
  12. 15
  13. 3400
  14. 800
  15. 9000
  16. 6
  17. 1200
  18. 1750
  19. 20
  20. 100
  21. 5.75
  22. 1300
  23. 7700
  24. 5400
  25. 1900
  26. 2500
  27. 1450
  28. 500
  29. 4900
  30. 600
  31. 3500
  32. 20
  33. 14000
  34. 9900
  35. 4800
  36. 4600
  37. 4.75
  38. 6600
  39. 16
  40. 3200

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