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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 510 · 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 2.7 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  4. 4.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 3 seconds?
  5. 5.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 4.8 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 8 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 1.8 seconds?
  9. 9.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 1.1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  17. 17.⏱️ How many milliseconds is a wait of 2.4 seconds?
  18. 18.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 2 seconds?
  22. 22.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  23. 23.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  26. 26.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  29. 29.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ How many milliseconds is a wait of 3.1 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 2.6 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?

Answer key

  1. 2700
  2. 12
  3. 1000
  4. 3
  5. 7.25
  6. 4800
  7. 8
  8. 1800
  9. 5.25
  10. 1100
  11. 1300
  12. 750
  13. 5400
  14. 7000
  15. 5500
  16. pauses for half a second
  17. 2400
  18. 1.75
  19. 1150
  20. 6000
  21. 1
  22. 5
  23. 17100
  24. 9
  25. 1.5
  26. 11000
  27. 1.25
  28. 2
  29. 7.5
  30. 2400
  31. 800
  32. 3100
  33. 2600
  34. 1350
  35. 12
  36. 800
  37. 6
  38. 20
  39. 6500
  40. 2500

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