← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 695 · 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 are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ How many milliseconds is a wait of 0.6 seconds?
  4. 4.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) pauses for half a second (d) turns the LED off
  7. 7.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 1.2 seconds?
  9. 9.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ How many milliseconds is a wait of 0.4 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ How many milliseconds is a wait of 3.3 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 4 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 18 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 1.1 seconds?
  22. 22.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  23. 23.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 1550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 20 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 2.6 seconds?
  27. 27.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  29. 29.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 4.8 seconds?
  33. 33.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 1.4 seconds?
  35. 35.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  37. 37.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  38. 38.⏱️ repeat 8 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 12 seconds?

Answer key

  1. 1000
  2. 350
  3. 600
  4. 4200
  5. 12
  6. pauses for half a second
  7. 2800
  8. 1200
  9. 9000
  10. 5100
  11. 400
  12. 950
  13. 1000
  14. 3900
  15. 850
  16. 7800
  17. 3300
  18. 2
  19. 9
  20. 1100
  21. 1100
  22. 2.5
  23. 17000
  24. 10
  25. 10
  26. 2600
  27. 5600
  28. 7
  29. 8100
  30. 5100
  31. 5600
  32. 4800
  33. 0.25
  34. 1400
  35. 4800
  36. 2
  37. 8.5
  38. 6400
  39. 450
  40. 30

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