← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 776 · 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.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  3. 3.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  4. 4.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) waits 500 seconds (d) blinks 500 times
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  6. 6.⏱️ loop forever { LED ON; wait 1850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 0.1 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 8 seconds?
  10. 10.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ How many milliseconds is a wait of 3.6 seconds?
  13. 13.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 0.5 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ How many milliseconds is a wait of 3.5 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 4.8 seconds?
  20. 20.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  21. 21.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 0.7 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 4.7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 16 seconds?
  28. 28.⏱️ repeat 2 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ How many milliseconds is a wait of 2.6 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 3.7 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 1050 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 18 seconds?
  36. 36.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  39. 39.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  40. 40.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?

Answer key

  1. 35
  2. 10
  3. 4.5
  4. pauses for half a second
  5. 1000
  6. 5
  7. 10
  8. 100
  9. 20
  10. 8.75
  11. 1050
  12. 3600
  13. 9000
  14. 25
  15. 1150
  16. 500
  17. 800
  18. 3500
  19. 4800
  20. 7.5
  21. 0.5
  22. 700
  23. 4700
  24. 12
  25. 1200
  26. 40
  27. 8
  28. 800
  29. 1.25
  30. 2400
  31. 1200
  32. 2600
  33. 3
  34. 3700
  35. 9
  36. 4.25
  37. 700
  38. 3
  39. 0.25
  40. 9600

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