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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 370 · 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 300 ms }
    How many times does the LED blink in 10 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 4.7 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 1600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 16 seconds?
  5. 5.⏱️ 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
  6. 6.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 10 seconds?
  9. 9.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 0.9 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 3.2 seconds?
  12. 12.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 0.5 seconds?
  15. 15.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ How many milliseconds is a wait of 4.8 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  21. 21.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 1 seconds?
  24. 24.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 60 (d) 100
  29. 29.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  31. 31.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 16 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 1.1 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 9500 ms”. How many seconds is that? =

Answer key

  1. 25
  2. 12
  3. 4700
  4. 8
  5. pauses for half a second
  6. 2.25
  7. 1400
  8. 10
  9. 10000
  10. 900
  11. 3200
  12. 10
  13. 30
  14. 500
  15. 3000
  16. 4800
  17. 12
  18. 3400
  19. 650
  20. 14
  21. 8800
  22. 1650
  23. 1000
  24. 1.5
  25. 7.5
  26. 4.5
  27. 8
  28. 1000
  29. 1300
  30. 20
  31. 5.5
  32. 8
  33. 25
  34. 1200
  35. 1100
  36. 100
  37. 1800
  38. 1350
  39. 5600
  40. 9.5

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