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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 753 · 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 0.6 seconds?
  2. 2.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  3. 3.⏱️ 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
  4. 4.⏱️ loop forever { LED ON; wait 1850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  5. 5.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 2.3 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  11. 11.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  12. 12.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 1.9 seconds?
  18. 18.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  21. 21.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 20 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  30. 30.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 8 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 3.7 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 16 seconds?
  38. 38.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 12 seconds?
  40. 40.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 600
  2. 1.25
  3. pauses for half a second
  4. 3
  5. 3
  6. 2300
  7. 950
  8. 6000
  9. 8
  10. 1000
  11. 1
  12. 9000
  13. 5000
  14. 50
  15. 1350
  16. 9.25
  17. 1900
  18. 10200
  19. 900
  20. 4
  21. 3.5
  22. 1800
  23. 50
  24. 1250
  25. 4.25
  26. 500
  27. 450
  28. 2.5
  29. 15
  30. 9.75
  31. 4000
  32. 1150
  33. 2700
  34. 850
  35. 20
  36. 3700
  37. 40
  38. 2200
  39. 30
  40. 12800

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