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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 475 · 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 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 4.4 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ How many milliseconds is a wait of 3.7 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 12 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 10 (d) 60
  8. 8.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  9. 9.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 0.2 seconds?
  11. 11.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  16. 16.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.1 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 4.3 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 3.5 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 0.4 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 1300 ms }
    How many times does the LED blink in 6 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 4 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 4.9 seconds?
  27. 27.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  29. 29.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  31. 31.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ How many milliseconds is a wait of 3.4 seconds?
  34. 34.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  36. 36.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 750
  2. 4400
  3. 1600
  4. 3700
  5. 6
  6. 1350
  7. 1000
  8. pauses for half a second
  9. 7
  10. 200
  11. 3600
  12. 1450
  13. 0.5
  14. 1300
  15. 45
  16. 10000
  17. 8.75
  18. 15300
  19. 1100
  20. 4300
  21. 3500
  22. 400
  23. 1000
  24. 3
  25. 8
  26. 4900
  27. 8.25
  28. 15
  29. 9
  30. 8
  31. 6
  32. 3200
  33. 3400
  34. 9.75
  35. 4
  36. 6.5
  37. 1100
  38. 7.5
  39. 25
  40. 10

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