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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 597 · 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 is a wait of 1.2 seconds?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  3. 3.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  4. 4.⏱️ 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
  5. 5.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  6. 6.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  7. 7.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 0.4 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 1.8 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 3 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 1.4 seconds?
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 0.9 seconds?
  20. 20.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 1 second?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 1.5 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 3.9 seconds?
  29. 29.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?
  34. 34.⏱️ How many milliseconds is a wait of 2.3 seconds?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?

Answer key

  1. 1200
  2. 1000
  3. 4
  4. pauses for half a second
  5. 25
  6. 3
  7. 4900
  8. 12
  9. 1150
  10. 400
  11. 1800
  12. 3
  13. 1450
  14. 1400
  15. 10200
  16. 8800
  17. 2000
  18. 20
  19. 900
  20. 5.75
  21. 350
  22. 1
  23. 6000
  24. 1500
  25. 150
  26. 850
  27. 9000
  28. 3900
  29. 1.75
  30. 7200
  31. 1250
  32. 10
  33. 2
  34. 2300
  35. 12800
  36. 8.25
  37. 4000
  38. 950
  39. 2
  40. 10

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