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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 267 · 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 3.3 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 2 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 1000 (d) 60
  4. 4.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) blinks 500 times (d) pauses for half a second
  6. 6.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 6 seconds?
  7. 7.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  8. 8.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  11. 11.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 12 seconds?
  13. 13.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 14 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 1.6 seconds?
  16. 16.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  17. 17.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 7 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ How many milliseconds is a wait of 4.4 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 5 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 1.8 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 4.1 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  27. 27.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 8 seconds?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 3.7 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 10 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 1.3 seconds?
  40. 40.⏱️ A program says “wait 6000 ms”. How many seconds is that? =

Answer key

  1. 3300
  2. 2
  3. 1000
  4. 1650
  5. pauses for half a second
  6. 6
  7. 9.25
  8. 9900
  9. 1300
  10. 6.5
  11. 1800
  12. 6
  13. 3000
  14. 7
  15. 1600
  16. 4.5
  17. 9.75
  18. 4200
  19. 7800
  20. 4400
  21. 5
  22. 1800
  23. 250
  24. 4100
  25. 1550
  26. 5.25
  27. 7200
  28. 5600
  29. 3
  30. 32
  31. 4
  32. 4000
  33. 10800
  34. 25
  35. 2800
  36. 3700
  37. 3
  38. 5
  39. 1300
  40. 6

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