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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 362 · 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 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) turns the LED off (d) waits 500 seconds
  4. 4.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 7 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 10 (d) 60
  11. 11.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 1 second?
  13. 13.⏱️ How many milliseconds is a wait of 4.7 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 9 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 12 seconds?
  16. 16.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1800 ms }
    How many times does the LED blink in 18 seconds?
  18. 18.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 2.2 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 6 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 4 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1250 ms }
    How many times does the LED blink in 20 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 0.9 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  27. 27.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 1.5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 1500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 20 seconds?

Answer key

  1. 650
  2. 1500
  3. pauses for half a second
  4. 2600
  5. 350
  6. 4000
  7. 7
  8. 1200
  9. 1000
  10. 1000
  11. 3000
  12. 1
  13. 4700
  14. 9
  15. 6
  16. 10800
  17. 9
  18. 6500
  19. 2200
  20. 3
  21. 2
  22. 10
  23. 1150
  24. 850
  25. 900
  26. 40
  27. 6600
  28. 1050
  29. 5
  30. 1500
  31. 10
  32. 6
  33. 5
  34. 550
  35. 9000
  36. 9600
  37. 4200
  38. 4900
  39. 15
  40. 50

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