← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 946 · 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 6500 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  4. 4.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 8 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  6. 6.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 7 seconds?
  9. 9.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ How many milliseconds is a wait of 3 seconds?
  20. 20.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  21. 21.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  24. 24.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  25. 25.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  27. 27.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  28. 28.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  29. 29.⏱️ How many milliseconds is a wait of 2.6 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 16 seconds?
  38. 38.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 2.1 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 1000 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 6.5
  2. 50
  3. 1000
  4. 4
  5. pauses for half a second
  6. 4900
  7. 1.75
  8. 7
  9. 0.25
  10. 4
  11. 13000
  12. 2.5
  13. 10
  14. 4.5
  15. 3300
  16. 1
  17. 1350
  18. 850
  19. 3000
  20. 4
  21. 6.75
  22. 1250
  23. 25
  24. 9.75
  25. 7200
  26. 32
  27. 0.5
  28. 6
  29. 2600
  30. 30
  31. 700
  32. 4000
  33. 7
  34. 750
  35. 700
  36. 14000
  37. 8
  38. 1200
  39. 2100
  40. 1

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