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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 994 · 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 2.5 seconds?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 1000 (d) 10
  3. 3.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 4 seconds?
  5. 5.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 1600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 8 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 3.3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 16 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  14. 14.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ How many milliseconds is a wait of 1.9 seconds?
  17. 17.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 3.1 seconds?
  19. 19.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ How many milliseconds is a wait of 0.4 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 14 seconds?
  25. 25.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  30. 30.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 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 3 seconds?
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 18 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 7 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 2500
  2. 1000
  3. 3200
  4. 8
  5. 7.75
  6. 4
  7. 500
  8. 3300
  9. 850
  10. 40
  11. 1900
  12. 700
  13. pauses for half a second
  14. 1500
  15. 6000
  16. 1900
  17. 3.25
  18. 3100
  19. 8400
  20. 400
  21. 32
  22. 1700
  23. 10
  24. 35
  25. 1.75
  26. 3
  27. 16
  28. 1250
  29. 16
  30. 1200
  31. 12
  32. 7200
  33. 9900
  34. 9000
  35. 1450
  36. 3600
  37. 45
  38. 14
  39. 800
  40. 1750

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