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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 492 · 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 are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  2. 2.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  3. 3.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  9. 9.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  10. 10.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  11. 11.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 1 second?
  15. 15.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 8 seconds?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 20 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ How many milliseconds is a wait of 3.4 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?

Answer key

  1. 1000
  2. 5.5
  3. 4200
  4. 14
  5. 1750
  6. 2
  7. 1300
  8. 5
  9. 3.5
  10. pauses for half a second
  11. 850
  12. 50
  13. 3
  14. 1
  15. 0.5
  16. 1050
  17. 16
  18. 2600
  19. 1400
  20. 20
  21. 600
  22. 12
  23. 6000
  24. 7
  25. 50
  26. 1450
  27. 650
  28. 8100
  29. 8
  30. 900
  31. 1100
  32. 6500
  33. 3400
  34. 300
  35. 18
  36. 650
  37. 3600
  38. 45
  39. 20
  40. 20

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