← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 841 · 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 1500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 3.8 seconds?
  3. 3.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  4. 4.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 10 (d) 100
  7. 7.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  8. 8.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  13. 13.⏱️ How many milliseconds is a wait of 0.6 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 16 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 3 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 3 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  22. 22.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  23. 23.⏱️ How many milliseconds is a wait of 0.7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  25. 25.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ How many milliseconds is a wait of 1.5 seconds?
  27. 27.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 16 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ How many milliseconds is a wait of 1.2 seconds?
  38. 38.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  39. 39.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1.5
  2. 3800
  3. pauses for half a second
  4. 3600
  5. 1200
  6. 1000
  7. 40
  8. 5.5
  9. 850
  10. 3.75
  11. 25
  12. 7.75
  13. 600
  14. 40
  15. 3000
  16. 35
  17. 3
  18. 1100
  19. 3
  20. 1600
  21. 0.25
  22. 7
  23. 700
  24. 9
  25. 11200
  26. 1500
  27. 9
  28. 8
  29. 1400
  30. 8.5
  31. 20
  32. 1300
  33. 4200
  34. 25
  35. 7600
  36. 700
  37. 1200
  38. 1.75
  39. 2.75
  40. 900

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