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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 264 · 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.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  2. 2.⏱️ How many milliseconds is a wait of 3 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 0.7 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  10. 10.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ How many milliseconds is a wait of 1.9 seconds?
  12. 12.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?
  16. 16.⏱️ How many milliseconds is a wait of 2.4 seconds?
  17. 17.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 0.3 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ How many milliseconds is a wait of 3.3 seconds?
  33. 33.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 5 seconds?
  36. 36.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  37. 37.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ How many milliseconds is a wait of 4.2 seconds?

Answer key

  1. pauses for half a second
  2. 3000
  3. 15
  4. 1000
  5. 24
  6. 400
  7. 900
  8. 700
  9. 5
  10. 10000
  11. 1900
  12. 8000
  13. 5.5
  14. 1600
  15. 2
  16. 2400
  17. 7.5
  18. 45
  19. 1250
  20. 20
  21. 300
  22. 1300
  23. 6.75
  24. 15
  25. 1400
  26. 5600
  27. 2.25
  28. 7700
  29. 32
  30. 850
  31. 4
  32. 3300
  33. 10
  34. 1050
  35. 5000
  36. 3.25
  37. 2400
  38. 9.75
  39. 550
  40. 4200

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