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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 894 · 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.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  6. 6.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  7. 7.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  8. 8.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 3.1 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 0.9 seconds?
  13. 13.⏱️ repeat 7 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) waits 500 seconds (d) turns the LED off
  16. 16.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 6 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  21. 21.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.7 seconds?
  27. 27.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ How many milliseconds is a wait of 4.1 seconds?
  30. 30.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  32. 32.⏱️ How many milliseconds is a wait of 2.4 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 4.7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 8750 ms”. How many seconds is that? =

Answer key

  1. 10
  2. 1100
  3. 7.25
  4. 1000
  5. 32
  6. 9.25
  7. 1
  8. 1200
  9. 8000
  10. 4.75
  11. 3100
  12. 900
  13. 8400
  14. 9100
  15. pauses for half a second
  16. 10400
  17. 2100
  18. 3
  19. 10
  20. 25
  21. 7700
  22. 1300
  23. 1950
  24. 1050
  25. 0.25
  26. 2700
  27. 4200
  28. 1200
  29. 4100
  30. 2700
  31. 2.25
  32. 2400
  33. 4700
  34. 4
  35. 4400
  36. 3
  37. 1000
  38. 1200
  39. 13000
  40. 8.75

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