← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 30 · 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 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 0.5 seconds?
  4. 4.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  5. 5.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  6. 6.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  8. 8.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) turns the LED off (d) pauses for half a second
  9. 9.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  10. 10.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 4 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  16. 16.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 4 seconds?
  24. 24.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 1.9 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 7 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 1.6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
  32. 32.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  33. 33.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 5 seconds?
  35. 35.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 1 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?

Answer key

  1. 10800
  2. 9600
  3. 500
  4. 9
  5. 3
  6. 5100
  7. 1000
  8. pauses for half a second
  9. 8.5
  10. 6.5
  11. 800
  12. 1.75
  13. 10
  14. 2
  15. 4
  16. 2400
  17. 4.25
  18. 850
  19. 4400
  20. 45
  21. 700
  22. 0.5
  23. 8
  24. 5.5
  25. 2
  26. 1900
  27. 1300
  28. 4200
  29. 7
  30. 1600
  31. 15
  32. 5.75
  33. 3.5
  34. 5000
  35. 9.5
  36. 1000
  37. 10
  38. 2.75
  39. 1450
  40. 40

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