← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 474 · 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 50 ms }
    How many times does the LED blink in 5 seconds?
  2. 2.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 1.1 seconds?
  6. 6.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  7. 7.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  8. 8.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 18 seconds?
  10. 10.⏱️ 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
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  16. 16.⏱️ How many milliseconds is a wait of 2.1 seconds?
  17. 17.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 12 seconds?
  20. 20.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  21. 21.⏱️ How many milliseconds is a wait of 4.5 seconds?
  22. 22.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 1.5 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 3.8 seconds?
  26. 26.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 0.3 seconds?
  32. 32.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ How many milliseconds is a wait of 2.3 seconds?
  36. 36.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  38. 38.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 25
  2. 6500
  3. 500
  4. 1750
  5. 1100
  6. 1000
  7. 1.5
  8. 2700
  9. 9
  10. pauses for half a second
  11. 750
  12. 9.25
  13. 6.5
  14. 6.75
  15. 15
  16. 2100
  17. 2800
  18. 1150
  19. 6
  20. 4.25
  21. 4500
  22. 2.5
  23. 950
  24. 1500
  25. 3800
  26. 0.75
  27. 250
  28. 5400
  29. 2800
  30. 5500
  31. 300
  32. 5.5
  33. 8
  34. 4200
  35. 2300
  36. 1.75
  37. 40
  38. 2000
  39. 1600
  40. 1100

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