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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 782 · 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.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  3. 3.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 1.3 seconds?
  5. 5.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  7. 7.⏱️ How many milliseconds is a wait of 2.7 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  9. 9.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 2.5 seconds?
  11. 11.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ How many milliseconds is a wait of 4.4 seconds?
  14. 14.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  16. 16.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  17. 17.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 3.2 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 10 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 1750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  29. 29.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ How many milliseconds is a wait of 3.7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 20 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 5 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 2.5
  2. 8
  3. 1
  4. 1300
  5. 7
  6. 6
  7. 2700
  8. 32
  9. 8.25
  10. 2500
  11. 5.5
  12. 600
  13. 4400
  14. 3600
  15. pauses for half a second
  16. 1000
  17. 3000
  18. 500
  19. 1250
  20. 6000
  21. 8400
  22. 3500
  23. 15
  24. 1600
  25. 3200
  26. 850
  27. 5
  28. 2
  29. 2800
  30. 1400
  31. 2600
  32. 400
  33. 3700
  34. 1050
  35. 1.5
  36. 50
  37. 30
  38. 750
  39. 5
  40. 1850

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