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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 671 · 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 500 ms”. How many seconds is that? =
  2. 2.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds is a wait of 3.4 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  5. 5.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 1.5 seconds?
  8. 8.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  10. 10.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ How many milliseconds is a wait of 1.6 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 2.7 seconds?
  14. 14.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 14 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  17. 17.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) blinks 500 times (d) turns the LED off
  19. 19.⏱️ How many milliseconds is a wait of 0.5 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 9 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 1.2 seconds?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 1.9 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 4.1 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  37. 37.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 16 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 0.7 seconds?

Answer key

  1. 0.5
  2. 5.5
  3. 3400
  4. 1000
  5. 6500
  6. 850
  7. 1500
  8. 1
  9. 5
  10. 850
  11. 1600
  12. 4
  13. 2700
  14. 7.5
  15. 35
  16. 4
  17. 8800
  18. pauses for half a second
  19. 500
  20. 45
  21. 9600
  22. 11700
  23. 36
  24. 1200
  25. 2400
  26. 1100
  27. 200
  28. 1200
  29. 1050
  30. 5
  31. 4
  32. 11000
  33. 8.5
  34. 1900
  35. 4100
  36. 18
  37. 7.75
  38. 8
  39. 40
  40. 700

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