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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 254 · 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 are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  2. 2.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ 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
  4. 4.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 4.9 seconds?
  6. 6.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  7. 7.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ How many milliseconds is a wait of 2.9 seconds?
  10. 10.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  11. 11.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  12. 12.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ How many milliseconds is a wait of 0.7 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 5 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 8 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 0.1 seconds?
  18. 18.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 3.8 seconds?
  25. 25.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 4.6 seconds?
  30. 30.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 14 seconds?
  32. 32.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ How many milliseconds is a wait of 2.5 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 3 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1000
  2. 350
  3. pauses for half a second
  4. 28
  5. 4900
  6. 4.5
  7. 0.75
  8. 1000
  9. 2900
  10. 5.5
  11. 1
  12. 7200
  13. 700
  14. 5
  15. 16
  16. 1300
  17. 100
  18. 2700
  19. 1.25
  20. 18
  21. 900
  22. 4800
  23. 7000
  24. 3800
  25. 0.25
  26. 12
  27. 10800
  28. 15
  29. 4600
  30. 6
  31. 7
  32. 9100
  33. 10
  34. 7000
  35. 2500
  36. 400
  37. 2
  38. 3
  39. 12
  40. 1150

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