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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 181 · 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 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 8 seconds?
  2. 2.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 2.4 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 1550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 14 seconds?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  6. 6.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  8. 8.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
  12. 12.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  13. 13.⏱️ How many milliseconds is a wait of 2.7 seconds?
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 2.8 seconds?
  18. 18.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  20. 20.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  22. 22.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 2 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  26. 26.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  27. 27.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 0.5 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  30. 30.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 0.3 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 0.1 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 4
  2. 2400
  3. 2400
  4. 7
  5. 1000
  6. 8
  7. 2
  8. 1800
  9. 1
  10. 4
  11. pauses for half a second
  12. 4.5
  13. 2700
  14. 2600
  15. 1150
  16. 1050
  17. 2800
  18. 20000
  19. 15
  20. 8.5
  21. 15
  22. 4
  23. 2000
  24. 1600
  25. 15
  26. 5.25
  27. 4200
  28. 500
  29. 2
  30. 24
  31. 24
  32. 850
  33. 2400
  34. 2.25
  35. 2.75
  36. 300
  37. 700
  38. 10
  39. 100
  40. 1400

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