← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 667 · 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.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 4.6 seconds?
  3. 3.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 1000 (d) 60
  5. 5.⏱️ How many milliseconds is a wait of 4.2 seconds?
  6. 6.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 1.8 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 0.9 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  19. 19.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  20. 20.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) waits 500 seconds (d) turns the LED off
  21. 21.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ How many milliseconds is a wait of 0.7 seconds?
  23. 23.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  27. 27.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 2.3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 1 second?
  30. 30.⏱️ How many milliseconds is a wait of 2.6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 9 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 2.5 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?

Answer key

  1. 2.5
  2. 4600
  3. 3.25
  4. 1000
  5. 4200
  6. 9600
  7. 11200
  8. 1800
  9. 2
  10. 900
  11. 24
  12. 1100
  13. 8400
  14. 4.5
  15. 1.5
  16. 5
  17. 450
  18. 1.25
  19. 8.75
  20. pauses for half a second
  21. 6000
  22. 700
  23. 8
  24. 15
  25. 400
  26. 40
  27. 12000
  28. 2300
  29. 2
  30. 2600
  31. 2
  32. 1250
  33. 9.75
  34. 25
  35. 13500
  36. 3600
  37. 2500
  38. 10
  39. 2.25
  40. 2800

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