← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 340 · 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 6250 ms”. How many seconds is that? =
  2. 2.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  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.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  7. 7.⏱️ How many milliseconds is a wait of 4.5 seconds?
  8. 8.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 3.2 seconds?
  11. 11.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  12. 12.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 10 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 5 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 4.7 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 4.3 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 3.3 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 3.5 seconds?
  21. 21.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1100 ms }
    How many times does the LED blink in 14 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 5 seconds?
  25. 25.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  26. 26.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 1.5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 9 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  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.⏱️ A program says “wait 7750 ms”. How many seconds is that? =

Answer key

  1. 6.25
  2. 1500
  3. 2400
  4. pauses for half a second
  5. 5.5
  6. 1000
  7. 4500
  8. 2.75
  9. 1150
  10. 3200
  11. 6.75
  12. 5
  13. 500
  14. 5
  15. 950
  16. 4700
  17. 4300
  18. 450
  19. 3300
  20. 3500
  21. 3000
  22. 10
  23. 7
  24. 10
  25. 8
  26. 3200
  27. 4800
  28. 900
  29. 9.75
  30. 250
  31. 900
  32. 4500
  33. 7
  34. 2400
  35. 9600
  36. 1500
  37. 18
  38. 1650
  39. 24
  40. 7.75

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