← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 719 · 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.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) pauses for half a second (c) blinks 500 times (d) turns the LED off
  2. 2.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  3. 3.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 1000 (d) 60
  6. 6.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ How many milliseconds is a wait of 3.2 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 14 seconds?
  15. 15.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ How many milliseconds is a wait of 0.2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ How many milliseconds is a wait of 3.6 seconds?
  19. 19.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 1300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 16 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 16 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 0.4 seconds?
  25. 25.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ How many milliseconds is a wait of 1.7 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 0.9 seconds?
  36. 36.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. pauses for half a second
  2. 7.5
  3. 1
  4. 10
  5. 1000
  6. 5.75
  7. 300
  8. 16000
  9. 3200
  10. 1650
  11. 4.75
  12. 3.5
  13. 850
  14. 7
  15. 11000
  16. 200
  17. 1250
  18. 3600
  19. 1600
  20. 6.25
  21. 8
  22. 40
  23. 35
  24. 400
  25. 2400
  26. 1550
  27. 950
  28. 3.25
  29. 10
  30. 1750
  31. 8
  32. 9.5
  33. 850
  34. 1700
  35. 900
  36. 4000
  37. 1800
  38. 1250
  39. 3200
  40. 850

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