← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 224 · 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.⏱️ 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
  3. 3.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 100 (d) 10
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 0.1 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1100 ms }
    How many times does the LED blink in 20 seconds?
  10. 10.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 20 seconds?
  13. 13.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 4 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ How many milliseconds is a wait of 5 seconds?
  21. 21.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 0.9 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 3.6 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  28. 28.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 1500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 8 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 2.8 seconds?
  31. 31.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  33. 33.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  38. 38.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ How many milliseconds is a wait of 0.2 seconds?

Answer key

  1. 3500
  2. pauses for half a second
  3. 4400
  4. 10
  5. 1000
  6. 4
  7. 3600
  8. 100
  9. 10
  10. 1.25
  11. 25
  12. 10
  13. 6600
  14. 2
  15. 6300
  16. 1050
  17. 6.75
  18. 4000
  19. 800
  20. 5000
  21. 0.5
  22. 900
  23. 45
  24. 3600
  25. 9
  26. 1600
  27. 40
  28. 2.75
  29. 4
  30. 2800
  31. 14000
  32. 40
  33. 9800
  34. 50
  35. 9100
  36. 1350
  37. 12
  38. 0.75
  39. 1100
  40. 200

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