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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 447 · 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.⏱️ How many milliseconds is a wait of 0.6 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 4.8 seconds?
  8. 8.⏱️ 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
  9. 9.⏱️ How many milliseconds is a wait of 0.4 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 3.8 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 3.2 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  14. 14.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  15. 15.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 2.2 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 0.8 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 1.8 seconds?
  23. 23.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 5 seconds?
  26. 26.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 6 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 20 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 3 seconds?
  32. 32.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  33. 33.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  37. 37.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  38. 38.⏱️ How many milliseconds is a wait of 3.7 seconds?
  39. 39.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 4 seconds?

Answer key

  1. 1600
  2. 600
  3. 850
  4. 1100
  5. 5.25
  6. 1500
  7. 4800
  8. pauses for half a second
  9. 400
  10. 3800
  11. 800
  12. 3200
  13. 3
  14. 1000
  15. 9.5
  16. 1700
  17. 10500
  18. 2200
  19. 6
  20. 2200
  21. 800
  22. 1800
  23. 1400
  24. 1150
  25. 10
  26. 4000
  27. 40
  28. 800
  29. 12
  30. 10
  31. 3000
  32. 8.25
  33. 1.75
  34. 32
  35. 14400
  36. 25
  37. 6.25
  38. 3700
  39. 9000
  40. 4000

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