← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 136 · 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.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  3. 3.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1800 ms }
    How many times does the LED blink in 6 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 5 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 10 seconds?
  8. 8.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  12. 12.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?
  14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  17. 17.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  19. 19.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  20. 20.⏱️ How many milliseconds is a wait of 0.7 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  23. 23.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  25. 25.⏱️ How many milliseconds is a wait of 3 seconds?
  26. 26.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 1.9 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 14 seconds?
  30. 30.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 9 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ How many milliseconds is a wait of 3.5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 9 seconds?
  40. 40.⏱️ A program says “wait 6000 ms”. How many seconds is that? =

Answer key

  1. 6.25
  2. pauses for half a second
  3. 8800
  4. 15
  5. 3
  6. 5000
  7. 10
  8. 15000
  9. 1550
  10. 8.5
  11. 28
  12. 4.25
  13. 2
  14. 10
  15. 16
  16. 10
  17. 9600
  18. 5
  19. 8.25
  20. 700
  21. 900
  22. 9
  23. 10800
  24. 1000
  25. 3000
  26. 0.5
  27. 7.75
  28. 1900
  29. 35
  30. 2.25
  31. 14000
  32. 8
  33. 9
  34. 1250
  35. 150
  36. 3500
  37. 500
  38. 28
  39. 9
  40. 6

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