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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 905 · 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.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 1000 (d) 10
  3. 3.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 1.6 seconds?
  5. 5.⏱️ 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
  6. 6.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 1.5 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ How many milliseconds is a wait of 1 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 4 seconds?
  12. 12.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ How many milliseconds is a wait of 2.8 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 2.6 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 0.2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 3 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  19. 19.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 4.7 seconds?
  22. 22.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 1 second?
  27. 27.⏱️ How many milliseconds is a wait of 3.9 seconds?
  28. 28.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  33. 33.⏱️ How many milliseconds is a wait of 0.9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 7 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  39. 39.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 15000
  2. 1000
  3. 8
  4. 1600
  5. pauses for half a second
  6. 2.75
  7. 1500
  8. 1850
  9. 1000
  10. 40
  11. 4000
  12. 9100
  13. 2800
  14. 2600
  15. 950
  16. 200
  17. 3
  18. 5
  19. 2700
  20. 3
  21. 4700
  22. 6.75
  23. 800
  24. 1050
  25. 500
  26. 1
  27. 3900
  28. 13000
  29. 1100
  30. 12000
  31. 5700
  32. 0.75
  33. 900
  34. 1000
  35. 9000
  36. 4000
  37. 7
  38. 15
  39. 9
  40. 13000

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