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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 281 · 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 0.9 seconds?
  2. 2.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 6 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  5. 5.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 1 second?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  8. 8.⏱️ How many milliseconds is a wait of 2.6 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 1.4 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) turns the LED off (d) blinks 500 times
  17. 17.⏱️ How many milliseconds is a wait of 2.5 seconds?
  18. 18.⏱️ How many milliseconds is a wait of 1 seconds?
  19. 19.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  22. 22.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 20 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  26. 26.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 9 seconds?
  29. 29.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 2.9 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 4 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  37. 37.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ How many milliseconds is a wait of 3.5 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  40. 40.⏱️ A program says “wait 5000 ms”. How many seconds is that? =

Answer key

  1. 900
  2. 6.25
  3. 3
  4. 1000
  5. 1
  6. 500
  7. 0.5
  8. 2600
  9. 1350
  10. 9
  11. 1900
  12. 1400
  13. 1650
  14. 11200
  15. 1700
  16. pauses for half a second
  17. 2500
  18. 1000
  19. 2400
  20. 4000
  21. 7.25
  22. 3.25
  23. 10
  24. 1450
  25. 2.5
  26. 2000
  27. 15
  28. 9
  29. 7.75
  30. 1450
  31. 2900
  32. 4
  33. 1150
  34. 12600
  35. 30
  36. 20
  37. 6400
  38. 3500
  39. 5
  40. 5

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