← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 381 · 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.⏱️ How many milliseconds is a wait of 3.5 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  4. 4.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 0.8 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 0.6 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 7 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 2.9 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  13. 13.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ How many milliseconds is a wait of 1.3 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 2.4 seconds?
  17. 17.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) pauses for half a second (d) turns the LED off
  18. 18.⏱️ How many milliseconds is a wait of 2 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  20. 20.⏱️ How many milliseconds is a wait of 4.1 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 1.4 seconds?
  22. 22.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 5 seconds?
  24. 24.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?
  31. 31.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 1300 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 0.4 seconds?
  33. 33.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 4 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 0.2 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 3 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 3500
  2. 650
  3. 10
  4. 7.25
  5. 6
  6. 800
  7. 600
  8. 250
  9. 7
  10. 2900
  11. 650
  12. 1000
  13. 2800
  14. 1300
  15. 1050
  16. 2400
  17. pauses for half a second
  18. 2000
  19. 4
  20. 4100
  21. 1400
  22. 8.25
  23. 5000
  24. 6000
  25. 600
  26. 1050
  27. 25
  28. 350
  29. 4.5
  30. 2
  31. 2
  32. 400
  33. 2.25
  34. 1.75
  35. 1200
  36. 4
  37. 200
  38. 3000
  39. 45
  40. 1150

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