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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 353 · 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 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  3. 3.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  5. 5.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ 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
  7. 7.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  10. 10.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 4 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 3.3 seconds?
  18. 18.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 3 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  23. 23.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 3.1 seconds?
  25. 25.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 4 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 1000 ms }
    How many times does the LED blink in 10 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 4.4 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 0.7 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 3.9 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 0.6 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 14 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 18 seconds?
  38. 38.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 550
  2. 8
  3. 800
  4. 3
  5. 10500
  6. pauses for half a second
  7. 6.75
  8. 1050
  9. 8.75
  10. 3500
  11. 700
  12. 1000
  13. 3900
  14. 250
  15. 10
  16. 8
  17. 3300
  18. 2.25
  19. 3000
  20. 1300
  21. 8000
  22. 32
  23. 2.75
  24. 3100
  25. 8000
  26. 2
  27. 5
  28. 4400
  29. 550
  30. 900
  31. 1600
  32. 700
  33. 3900
  34. 600
  35. 7
  36. 1550
  37. 9
  38. 1400
  39. 7
  40. 1950

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