← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 132 · 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.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  3. 3.⏱️ How many milliseconds is a wait of 4 seconds?
  4. 4.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 16 seconds?
  9. 9.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 2 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 1750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 20 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 2.3 seconds?
  17. 17.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 1.9 seconds?
  19. 19.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) blinks 500 times (d) waits 500 seconds
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  24. 24.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  25. 25.⏱️ How many milliseconds is a wait of 1.5 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  28. 28.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  29. 29.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 3 seconds?
  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.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ How many milliseconds is a wait of 2.8 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 3.1 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ How many milliseconds is a wait of 0.3 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 6250 ms”. How many seconds is that? =

Answer key

  1. 4500
  2. 1000
  3. 4000
  4. 8800
  5. 6800
  6. 1400
  7. 6.5
  8. 8
  9. 1.5
  10. 700
  11. 1
  12. 600
  13. 8
  14. 10
  15. 200
  16. 2300
  17. 1
  18. 1900
  19. pauses for half a second
  20. 1900
  21. 1050
  22. 1600
  23. 2.75
  24. 4.75
  25. 1500
  26. 35
  27. 30
  28. 5.25
  29. 2.5
  30. 3
  31. 3
  32. 40
  33. 750
  34. 2800
  35. 3100
  36. 1250
  37. 300
  38. 750
  39. 850
  40. 6.25

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