← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 655 · 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 is a wait of 4.8 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  4. 4.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 1 second?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  9. 9.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  12. 12.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ 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
  15. 15.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  16. 16.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  18. 18.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 1000 (d) 60
  19. 19.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 0.9 seconds?
  24. 24.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  26. 26.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 18 seconds?
  30. 30.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ How many milliseconds is a wait of 2.7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 6 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  39. 39.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  40. 40.⏱️ How many milliseconds is a wait of 4.1 seconds?

Answer key

  1. 4800
  2. 1550
  3. 1
  4. 8000
  5. 2.75
  6. 4
  7. 2
  8. 15
  9. 6600
  10. 0.5
  11. 16
  12. 5
  13. 1450
  14. pauses for half a second
  15. 3
  16. 3200
  17. 5
  18. 1000
  19. 350
  20. 7700
  21. 1150
  22. 200
  23. 900
  24. 9.25
  25. 3.75
  26. 5500
  27. 9000
  28. 5.5
  29. 9
  30. 3600
  31. 15
  32. 1500
  33. 2700
  34. 1150
  35. 50
  36. 12
  37. 1600
  38. 25
  39. 6.25
  40. 4100

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