← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 773 · 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 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  2. 2.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  4. 4.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  5. 5.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  7. 7.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 8 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  12. 12.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 4 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 7 seconds?
  18. 18.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 3.7 seconds?
  20. 20.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  21. 21.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  22. 22.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 2 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.7 seconds?
  33. 33.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 20 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ How many milliseconds is a wait of 1.4 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 15
  2. 5.75
  3. 2
  4. 4.5
  5. 1.75
  6. 1000
  7. 2.25
  8. 900
  9. 20
  10. 250
  11. 2
  12. 6000
  13. 3900
  14. 500
  15. 0.5
  16. 8
  17. 14
  18. 1
  19. 3700
  20. 1.5
  21. pauses for half a second
  22. 1300
  23. 2
  24. 300
  25. 9000
  26. 4
  27. 800
  28. 10
  29. 10
  30. 2000
  31. 36
  32. 1700
  33. 4000
  34. 50
  35. 350
  36. 350
  37. 1400
  38. 700
  39. 4.75
  40. 1250

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