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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 836 · 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 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
  5. 5.⏱️ How many milliseconds is a wait of 1.3 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 9 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 3.4 seconds?
  8. 8.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  9. 9.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  10. 10.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  11. 11.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  12. 12.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ How many milliseconds is a wait of 3.1 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  18. 18.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 18 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 2.9 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 2.5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 8 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  33. 33.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  37. 37.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ How many milliseconds is a wait of 2.6 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 800
  2. 3.25
  3. 6
  4. 1000
  5. 1300
  6. 9
  7. 3400
  8. 5.5
  9. 8.5
  10. 9
  11. 6.75
  12. 900
  13. 3900
  14. 6300
  15. 3100
  16. 400
  17. 6.5
  18. 0.5
  19. 2.25
  20. 4000
  21. 9000
  22. 1.5
  23. 28
  24. 9
  25. 35
  26. 1300
  27. 30
  28. 2900
  29. 15
  30. 2500
  31. 8
  32. 15
  33. 3
  34. 8400
  35. 1200
  36. 5
  37. 350
  38. 2600
  39. 2
  40. 11700

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