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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 558 · 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 3.6 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 3.4 seconds?
  3. 3.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  4. 4.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ How many milliseconds is a wait of 1.9 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 4 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 4 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  16. 16.⏱️ How many milliseconds is a wait of 1.2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 1100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 16 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 4.4 seconds?
  20. 20.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 100 (d) 10
  22. 22.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 0.6 seconds?
  25. 25.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  28. 28.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ How many milliseconds is a wait of 4.7 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 1.1 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 1 second?
  33. 33.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 3.2 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?

Answer key

  1. 3600
  2. 3400
  3. pauses for half a second
  4. 1150
  5. 1350
  6. 1900
  7. 8
  8. 500
  9. 2
  10. 3600
  11. 4800
  12. 7.75
  13. 4
  14. 950
  15. 2.5
  16. 1200
  17. 8
  18. 1000
  19. 4400
  20. 3300
  21. 1000
  22. 1300
  23. 6.5
  24. 600
  25. 3
  26. 4.75
  27. 20
  28. 11200
  29. 1500
  30. 4700
  31. 1100
  32. 1
  33. 800
  34. 1600
  35. 3200
  36. 650
  37. 6.75
  38. 750
  39. 4800
  40. 4800

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