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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 294 · 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 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 1300 ms }
    How many times does the LED blink in 6 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  4. 4.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ How many milliseconds is a wait of 3.3 seconds?
  7. 7.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 0.7 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  19. 19.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  20. 20.⏱️ How many milliseconds is a wait of 0.6 seconds?
  21. 21.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 14 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  29. 29.⏱️ How many milliseconds is a wait of 1.3 seconds?
  30. 30.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 20 seconds?
  34. 34.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 3.7 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 4.9 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 6000 ms”. How many seconds is that? =

Answer key

  1. 40
  2. 3
  3. 1000
  4. 1300
  5. 900
  6. 3300
  7. 9000
  8. pauses for half a second
  9. 250
  10. 3400
  11. 10800
  12. 4.5
  13. 5.75
  14. 9.5
  15. 3
  16. 1250
  17. 700
  18. 2
  19. 0.75
  20. 600
  21. 7200
  22. 0.5
  23. 7.75
  24. 35
  25. 4
  26. 4000
  27. 600
  28. 1
  29. 1300
  30. 1800
  31. 16
  32. 500
  33. 50
  34. 4.25
  35. 700
  36. 3700
  37. 4900
  38. 1150
  39. 10800
  40. 6

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