← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 678 · 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.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  2. 2.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) waits 500 seconds (d) turns the LED off
  4. 4.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 16 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 1.5 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 4.4 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 2 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 8 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 4.6 seconds?
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 4 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 14 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 4.9 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 4.1 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ How many milliseconds is a wait of 2.6 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 7 seconds?
  34. 34.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1100 ms }
    How many times does the LED blink in 12 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  38. 38.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1000
  2. 1750
  3. pauses for half a second
  4. 40
  5. 1500
  6. 32
  7. 4400
  8. 3000
  9. 1
  10. 1
  11. 16
  12. 4600
  13. 3600
  14. 1150
  15. 10
  16. 1650
  17. 1450
  18. 2400
  19. 4000
  20. 7
  21. 8
  22. 32
  23. 3500
  24. 4900
  25. 4100
  26. 1700
  27. 2600
  28. 800
  29. 2
  30. 1050
  31. 1350
  32. 1.5
  33. 14
  34. 1800
  35. 4400
  36. 6
  37. 1
  38. 8
  39. 8
  40. 3900

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