← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 927 · 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 4.9 seconds?
  2. 2.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  4. 4.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 3.4 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 0.7 seconds?
  11. 11.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 1.8 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 9 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  21. 21.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ How many milliseconds is a wait of 3 seconds?
  23. 23.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 7 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ How many milliseconds is a wait of 2.1 seconds?
  27. 27.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ How many milliseconds is a wait of 4.8 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 4.5 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ How many milliseconds is a wait of 3.3 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 2.5 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  38. 38.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  40. 40.⏱️ A program says “wait 1000 ms”. How many seconds is that? =

Answer key

  1. 4900
  2. 1800
  3. 1000
  4. 6.75
  5. 800
  6. 5000
  7. 5500
  8. 3400
  9. 1600
  10. 700
  11. pauses for half a second
  12. 1000
  13. 5.75
  14. 10
  15. 1450
  16. 1800
  17. 36
  18. 300
  19. 32
  20. 25
  21. 4900
  22. 3000
  23. 2800
  24. 7
  25. 1150
  26. 2100
  27. 5
  28. 7200
  29. 4800
  30. 4500
  31. 1300
  32. 3300
  33. 2500
  34. 600
  35. 600
  36. 10
  37. 4
  38. 700
  39. 0.75
  40. 1

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