← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 982 · 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.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  4. 4.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 14 seconds?
  5. 5.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  6. 6.⏱️ 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
  7. 7.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 1.4 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 4.2 seconds?
  10. 10.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ How many milliseconds is a wait of 0.2 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  13. 13.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  20. 20.⏱️ How many milliseconds is a wait of 5 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 4.8 seconds?
  22. 22.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ How many milliseconds is a wait of 3 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  25. 25.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  28. 28.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  30. 30.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 5 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ How many milliseconds is a wait of 0.8 seconds?
  40. 40.⏱️ A program says “wait 10000 ms”. How many seconds is that? =

Answer key

  1. 1300
  2. 40
  3. 1000
  4. 7
  5. 1.75
  6. pauses for half a second
  7. 900
  8. 1400
  9. 4200
  10. 7200
  11. 200
  12. 16
  13. 7000
  14. 2500
  15. 2000
  16. 10
  17. 1650
  18. 6000
  19. 9.5
  20. 5000
  21. 4800
  22. 4200
  23. 3000
  24. 28
  25. 0.25
  26. 1050
  27. 15
  28. 4.75
  29. 50
  30. 11200
  31. 1200
  32. 550
  33. 3000
  34. 5
  35. 550
  36. 7000
  37. 7000
  38. 950
  39. 800
  40. 10

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