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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 441 · 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.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 0.5 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 10 (d) 1000
  4. 4.⏱️ How many milliseconds is a wait of 3.9 seconds?
  5. 5.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) turns the LED off (d) waits 500 seconds
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 2.9 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 3.4 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  13. 13.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 20 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 1 seconds?
  17. 17.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 0.6 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  21. 21.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 1.5 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 2 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 1.9 seconds?
  39. 39.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 7
  2. 500
  3. 1000
  4. 3900
  5. 0.75
  6. pauses for half a second
  7. 28
  8. 2900
  9. 3400
  10. 1450
  11. 5500
  12. 40
  13. 14000
  14. 50
  15. 1050
  16. 1000
  17. 0.25
  18. 600
  19. 350
  20. 28
  21. 3400
  22. 1050
  23. 1400
  24. 250
  25. 350
  26. 9.5
  27. 3.25
  28. 750
  29. 5.5
  30. 1200
  31. 850
  32. 7700
  33. 6
  34. 10
  35. 850
  36. 1500
  37. 2000
  38. 1900
  39. 7.25
  40. 1150

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