← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 166 · 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 0.3 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 0.8 seconds?
  3. 3.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
  5. 5.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 7 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 3.1 seconds?
  9. 9.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) turns the LED off (d) pauses for half a second
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 1.1 seconds?
  13. 13.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  18. 18.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 9 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  25. 25.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ How many milliseconds is a wait of 4.1 seconds?
  33. 33.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  38. 38.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 300
  2. 800
  3. 16
  4. 1000
  5. 10400
  6. 600
  7. 14
  8. 3100
  9. pauses for half a second
  10. 3600
  11. 15
  12. 1100
  13. 2400
  14. 300
  15. 10
  16. 45
  17. 40
  18. 4500
  19. 1100
  20. 8.25
  21. 750
  22. 9
  23. 400
  24. 35
  25. 2.5
  26. 1100
  27. 3900
  28. 3800
  29. 5.5
  30. 1600
  31. 850
  32. 4100
  33. 7200
  34. 1
  35. 1550
  36. 1550
  37. 28
  38. 7
  39. 8
  40. 600

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