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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 727 · 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 700 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 0.1 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 10 (d) 1000
  4. 4.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 9 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) waits 500 seconds (d) turns the LED off
  7. 7.⏱️ How many milliseconds is a wait of 3.2 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  10. 10.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 0.6 seconds?
  12. 12.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  13. 13.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  16. 16.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 12 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 14 seconds?
  23. 23.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 4.1 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  28. 28.⏱️ How many milliseconds is a wait of 0.9 seconds?
  29. 29.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 9 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 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ How many milliseconds is a wait of 1 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 16 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 4 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 7 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 2.3 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 4.6 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 3.7 seconds?

Answer key

  1. 950
  2. 100
  3. 1000
  4. 9
  5. 650
  6. pauses for half a second
  7. 3200
  8. 1550
  9. 9.75
  10. 7
  11. 600
  12. 8.5
  13. 1600
  14. 4
  15. 1.75
  16. 10400
  17. 4.25
  18. 1450
  19. 2800
  20. 6.25
  21. 6
  22. 7
  23. 4800
  24. 4100
  25. 24
  26. 1100
  27. 4
  28. 900
  29. 9
  30. 2700
  31. 1050
  32. 1000
  33. 10
  34. 4500
  35. 40
  36. 4
  37. 7
  38. 2300
  39. 4600
  40. 3700

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