← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 951 · 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 9 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 20 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 3.8 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  8. 8.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  10. 10.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  11. 11.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 3.3 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 0.3 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 2.1 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 1850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 20 seconds?
  17. 17.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
  18. 18.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 4.3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  26. 26.⏱️ repeat 4 times { buzzer ON; wait 900 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 9 seconds?
  28. 28.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 4.7 seconds?
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 0.4 seconds?
  33. 33.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 5 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 4.2 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 1.5 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 0.8 seconds?

Answer key

  1. 45
  2. 1250
  3. 10
  4. 3800
  5. 1450
  6. 3.75
  7. 10
  8. 4000
  9. 7.75
  10. pauses for half a second
  11. 9900
  12. 15
  13. 3300
  14. 300
  15. 2100
  16. 10
  17. 1000
  18. 750
  19. 5500
  20. 2000
  21. 24
  22. 550
  23. 36
  24. 4300
  25. 6
  26. 7200
  27. 9
  28. 4000
  29. 2.5
  30. 4700
  31. 5700
  32. 400
  33. 3.5
  34. 10
  35. 1350
  36. 5000
  37. 4200
  38. 1500
  39. 24
  40. 800

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