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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 694 · 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.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ 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
  3. 3.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 3.5 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 4.1 seconds?
  6. 6.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 1.1 seconds?
  8. 8.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 2.1 seconds?
  13. 13.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  16. 16.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  17. 17.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  18. 18.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 8 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 0.8 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 2.2 seconds?
  23. 23.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 3.6 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  28. 28.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 1.6 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ How many milliseconds is a wait of 2 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 4.2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 750
  2. pauses for half a second
  3. 8
  4. 3500
  5. 4100
  6. 1
  7. 1100
  8. 9
  9. 1350
  10. 4
  11. 1100
  12. 2100
  13. 6.5
  14. 650
  15. 1000
  16. 0.75
  17. 7.75
  18. 2.75
  19. 8
  20. 1250
  21. 800
  22. 2200
  23. 7
  24. 1100
  25. 3000
  26. 3600
  27. 4
  28. 1000
  29. 2700
  30. 2
  31. 17000
  32. 1050
  33. 1300
  34. 20
  35. 10
  36. 1600
  37. 800
  38. 2000
  39. 4200
  40. 1650

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