← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 401 · 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 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 3 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 2.1 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 1650 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 1.3 seconds?
  9. 9.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  10. 10.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 4.4 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 5 seconds?
  13. 13.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  15. 15.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 10 seconds?
  17. 17.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) turns the LED off (d) blinks 500 times
  18. 18.⏱️ How many milliseconds is a wait of 3.3 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  23. 23.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 1.2 seconds?
  27. 27.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 1.7 seconds?
  29. 29.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 14 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 1250 ms”. How many seconds is that? =

Answer key

  1. 10
  2. 1400
  3. 3
  4. 9
  5. 2100
  6. 1
  7. 35
  8. 1300
  9. 1000
  10. 4.25
  11. 4400
  12. 5000
  13. 9.25
  14. 10
  15. 2.75
  16. 20
  17. pauses for half a second
  18. 3300
  19. 1050
  20. 1050
  21. 3600
  22. 40
  23. 6000
  24. 1300
  25. 1.5
  26. 1200
  27. 3.75
  28. 1700
  29. 3000
  30. 12
  31. 35
  32. 450
  33. 9
  34. 800
  35. 3.25
  36. 1200
  37. 2000
  38. 10
  39. 650
  40. 1.25

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