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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 884 · 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 50 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) turns the LED off (d) waits 500 seconds
  3. 3.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 1.5 seconds?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 10 (d) 60
  6. 6.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 2.3 seconds?
  8. 8.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 0.8 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 2.6 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 2.7 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 1 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 3 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 1.7 seconds?
  18. 18.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  19. 19.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 1950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 4.7 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 9 seconds?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 1.2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?

Answer key

  1. 1050
  2. pauses for half a second
  3. 900
  4. 1500
  5. 1000
  6. 650
  7. 2300
  8. 4.75
  9. 1200
  10. 800
  11. 2600
  12. 300
  13. 1550
  14. 2700
  15. 1000
  16. 3
  17. 1700
  18. 1.5
  19. 6000
  20. 350
  21. 5
  22. 1150
  23. 40
  24. 1200
  25. 3.5
  26. 3.75
  27. 1100
  28. 20
  29. 4700
  30. 25
  31. 6.25
  32. 4800
  33. 1300
  34. 9
  35. 8000
  36. 45
  37. 3000
  38. 7
  39. 1200
  40. 30

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