← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 863 · 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 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 12 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 0.7 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 3 seconds?
  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.⏱️ How many milliseconds is a wait of 4.4 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 4 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 7 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 4 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  25. 25.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 10 (d) 1000
  29. 29.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  30. 30.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 2.8 seconds?
  38. 38.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  40. 40.⏱️ A program says “wait 9750 ms”. How many seconds is that? =

Answer key

  1. 30
  2. 700
  3. 3000
  4. pauses for half a second
  5. 4400
  6. 8
  7. 6000
  8. 6400
  9. 4000
  10. 7600
  11. 8000
  12. 7.5
  13. 6
  14. 750
  15. 1800
  16. 1050
  17. 8.5
  18. 2
  19. 7
  20. 4000
  21. 1050
  22. 0.75
  23. 10
  24. 50
  25. 4800
  26. 1350
  27. 900
  28. 1000
  29. 7
  30. 4500
  31. 3600
  32. 1250
  33. 4
  34. 700
  35. 1700
  36. 15
  37. 2800
  38. 9000
  39. 3.25
  40. 9.75

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids