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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 898 · 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 800 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  6. 6.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 14 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 2.7 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 4.5 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 0.1 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ 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
  17. 17.⏱️ How many milliseconds is a wait of 1 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 9 seconds?
  22. 22.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 16 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 8 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 4.3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 6 seconds?
  30. 30.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 12 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  40. 40.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1500
  2. 8.25
  3. 700
  4. 1200
  5. 1000
  6. 950
  7. 35
  8. 2700
  9. 4500
  10. 100
  11. 550
  12. 700
  13. 2.75
  14. 800
  15. 550
  16. pauses for half a second
  17. 1000
  18. 1200
  19. 2.25
  20. 10
  21. 36
  22. 4.25
  23. 7.5
  24. 1150
  25. 8
  26. 1700
  27. 4
  28. 4300
  29. 3
  30. 8
  31. 50
  32. 5
  33. 36
  34. 24
  35. 30
  36. 650
  37. 4200
  38. 0.75
  39. 7
  40. 6000

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