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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 200 · 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 8500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  3. 3.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  9. 9.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  11. 11.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  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.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 6 seconds?
  21. 21.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  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.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 0.1 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 4.8 seconds?
  29. 29.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 20 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 3.7 seconds?
  36. 36.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 2.4 seconds?
  38. 38.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 8.5
  2. 1000
  3. 3600
  4. 1150
  5. 3200
  6. 6
  7. 800
  8. 35
  9. pauses for half a second
  10. 35
  11. 7.5
  12. 6.25
  13. 2
  14. 9.25
  15. 650
  16. 1.75
  17. 1900
  18. 15
  19. 1250
  20. 6
  21. 4800
  22. 6.5
  23. 40
  24. 1750
  25. 9500
  26. 16
  27. 100
  28. 4800
  29. 3000
  30. 900
  31. 450
  32. 1050
  33. 45
  34. 50
  35. 3700
  36. 3500
  37. 2400
  38. 0.75
  39. 5
  40. 10

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