← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 968 · 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 5250 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 3.9 seconds?
  3. 3.⏱️ 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
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 9 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 3.6 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  7. 7.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  9. 9.⏱️ How many milliseconds is a wait of 4.6 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 18 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 2.2 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 4 seconds?
  17. 17.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 4.8 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  21. 21.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 3.2 seconds?
  24. 24.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ How many milliseconds is a wait of 4.3 seconds?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 4.4 seconds?
  39. 39.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  40. 40.⏱️ How many milliseconds is a wait of 4.1 seconds?

Answer key

  1. 5.25
  2. 3900
  3. pauses for half a second
  4. 36
  5. 3600
  6. 2
  7. 1000
  8. 1000
  9. 4600
  10. 900
  11. 9
  12. 1100
  13. 4
  14. 2200
  15. 350
  16. 2
  17. 8
  18. 13600
  19. 4800
  20. 7
  21. 7.75
  22. 1250
  23. 3200
  24. 4800
  25. 950
  26. 4300
  27. 11700
  28. 2
  29. 16200
  30. 500
  31. 350
  32. 10000
  33. 10
  34. 950
  35. 10
  36. 1400
  37. 25
  38. 4400
  39. 2.5
  40. 4100

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