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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 357 · 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.⏱️ How many milliseconds is a wait of 1.6 seconds?
  2. 2.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 0.3 seconds?
  4. 4.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  5. 5.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 60 (d) 10
  8. 8.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds is a wait of 3.7 seconds?
  16. 16.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ How many milliseconds is a wait of 2.5 seconds?
  18. 18.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  20. 20.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ How many milliseconds is a wait of 2.3 seconds?
  22. 22.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 18 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 14 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  29. 29.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 1500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 5 seconds?
  33. 33.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 18 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 9 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 5 seconds?
  40. 40.⏱️ A program says “wait 1250 ms”. How many seconds is that? =

Answer key

  1. 1600
  2. 3600
  3. 300
  4. 6.75
  5. 3.25
  6. pauses for half a second
  7. 1000
  8. 4000
  9. 1550
  10. 800
  11. 7500
  12. 4.75
  13. 4800
  14. 200
  15. 3700
  16. 10800
  17. 2500
  18. 7700
  19. 30
  20. 7500
  21. 2300
  22. 6.25
  23. 9.25
  24. 45
  25. 15
  26. 7
  27. 20
  28. 15
  29. 9000
  30. 4.5
  31. 2
  32. 5000
  33. 2
  34. 1050
  35. 0.75
  36. 25
  37. 45
  38. 9
  39. 5
  40. 1.25

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