← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 350 · 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.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds is a wait of 1.2 seconds?
  3. 3.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) pauses for half a second (d) turns the LED off
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 1000 (d) 10
  8. 8.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ repeat 3 times { buzzer ON; wait 800 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.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  14. 14.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 1.3 seconds?
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 1 second?
  20. 20.⏱️ How many milliseconds is a wait of 4.8 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  22. 22.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  27. 27.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 16 seconds?
  28. 28.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 8 seconds?
  31. 31.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  36. 36.⏱️ How many milliseconds is a wait of 3.2 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 1.4 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 1000 ms”. How many seconds is that? =

Answer key

  1. 3000
  2. 1200
  3. 3.5
  4. 1450
  5. 2
  6. pauses for half a second
  7. 1000
  8. 1600
  9. 400
  10. 1550
  11. 5400
  12. 2.5
  13. 10
  14. 7.75
  15. 6600
  16. 45
  17. 1300
  18. 8100
  19. 1
  20. 4800
  21. 20
  22. 3400
  23. 1300
  24. 900
  25. 12800
  26. 6
  27. 40
  28. 4.25
  29. 8
  30. 8
  31. 4000
  32. 750
  33. 25
  34. 350
  35. 6.25
  36. 3200
  37. 45
  38. 1400
  39. 1700
  40. 1

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