← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 426 · 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 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ repeat 9 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  4. 4.⏱️ How many milliseconds is a wait of 3.9 seconds?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 6 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  9. 9.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 0.3 seconds?
  11. 11.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 1250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 2 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 0.6 seconds?
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  23. 23.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  24. 24.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 2.8 seconds?
  26. 26.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 1.4 seconds?
  33. 33.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 3 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 1750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 18 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?

Answer key

  1. 800
  2. 8100
  3. pauses for half a second
  4. 3900
  5. 1000
  6. 3
  7. 1300
  8. 3.75
  9. 1800
  10. 300
  11. 10200
  12. 6.75
  13. 5
  14. 6600
  15. 45
  16. 45
  17. 1
  18. 24
  19. 600
  20. 4000
  21. 1350
  22. 1.5
  23. 2.25
  24. 8500
  25. 2800
  26. 3000
  27. 32
  28. 1200
  29. 550
  30. 2
  31. 2100
  32. 1400
  33. 3
  34. 5.5
  35. 10
  36. 3000
  37. 9
  38. 650
  39. 4000
  40. 20

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