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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 241 · 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 200 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds is a wait of 1 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 3.6 seconds?
  9. 9.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  10. 10.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) turns the LED off (d) blinks 500 times
  11. 11.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 6 seconds?
  12. 12.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  17. 17.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  20. 20.⏱️ How many milliseconds is a wait of 1.4 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 18 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1800 ms }
    How many times does the LED blink in 18 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 18 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 2.4 seconds?
  26. 26.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  33. 33.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 4.1 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 4.2 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 0.9 seconds?

Answer key

  1. 950
  2. 8400
  3. 12800
  4. 15000
  5. 1000
  6. 1
  7. 1800
  8. 3600
  9. 1.5
  10. pauses for half a second
  11. 6
  12. 1.75
  13. 900
  14. 2400
  15. 900
  16. 8.25
  17. 6000
  18. 4800
  19. 1000
  20. 1400
  21. 9
  22. 9
  23. 45
  24. 650
  25. 2400
  26. 11200
  27. 8
  28. 1100
  29. 32
  30. 1050
  31. 3.5
  32. 20
  33. 5.5
  34. 3300
  35. 1250
  36. 4100
  37. 4200
  38. 10
  39. 12600
  40. 900

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