← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 995 · 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) blinks 500 times (c) pauses for half a second (d) turns the LED off
  2. 2.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  5. 5.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  7. 7.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  8. 8.⏱️ How many milliseconds is a wait of 3.8 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 2 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 1.2 seconds?
  11. 11.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  20. 20.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 1.1 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 0.8 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  24. 24.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 4.5 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 1650 ms }
    How many times does the LED blink in 4 seconds?
  31. 31.⏱️ How many milliseconds is a wait of 3.5 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.6 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 4 seconds?
  34. 34.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 2.7 seconds?
  39. 39.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 16 seconds?

Answer key

  1. pauses for half a second
  2. 2000
  3. 800
  4. 10
  5. 2
  6. 20
  7. 1.5
  8. 3800
  9. 2000
  10. 1200
  11. 3200
  12. 2000
  13. 850
  14. 1200
  15. 650
  16. 4500
  17. 1550
  18. 750
  19. 1000
  20. 850
  21. 1100
  22. 800
  23. 20
  24. 3900
  25. 4500
  26. 150
  27. 4.25
  28. 3000
  29. 4900
  30. 2
  31. 3500
  32. 1600
  33. 4000
  34. 2.75
  35. 5400
  36. 7000
  37. 2
  38. 2700
  39. 1.75
  40. 40

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