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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 489 · 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 1750 ms”. How many seconds is that? =
  2. 2.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  3. 3.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  4. 4.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 9 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 6 seconds?
  14. 14.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  18. 18.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 14 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ How many milliseconds is a wait of 5 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 3.3 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  24. 24.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 3.7 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 14 seconds?
  28. 28.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  29. 29.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 4.9 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 8 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 12 seconds?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ How many milliseconds is a wait of 2.7 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 12 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1.75
  2. 2.75
  3. 2
  4. 8400
  5. 9
  6. 10
  7. 650
  8. 10800
  9. 10200
  10. 2
  11. 30
  12. 15
  13. 6
  14. 2.25
  15. 2.5
  16. 0.5
  17. 1000
  18. 7
  19. 200
  20. 5000
  21. 3300
  22. 2
  23. 4
  24. 600
  25. 30
  26. 3700
  27. 7
  28. pauses for half a second
  29. 1.5
  30. 4900
  31. 1100
  32. 8
  33. 35
  34. 1450
  35. 5
  36. 30
  37. 400
  38. 2700
  39. 30
  40. 800

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