← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 921 · 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 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds is a wait of 0.8 seconds?
  3. 3.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 3 seconds?
  5. 5.⏱️ How many milliseconds is a wait of 2.5 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 5 seconds?
  9. 9.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ 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
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 10 seconds?
  14. 14.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 100 (d) 1000
  15. 15.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  23. 23.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 0.9 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 1800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 20 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 4.3 seconds?
  28. 28.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 2.4 seconds?
  33. 33.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ How many milliseconds is a wait of 3.1 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 2 seconds?
  40. 40.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?

Answer key

  1. 2100
  2. 800
  3. 9.25
  4. 3000
  5. 2500
  6. 650
  7. 3
  8. 5
  9. 1200
  10. 9000
  11. 250
  12. pauses for half a second
  13. 20
  14. 1000
  15. 7.75
  16. 45
  17. 650
  18. 1300
  19. 7.5
  20. 18
  21. 950
  22. 4
  23. 10
  24. 900
  25. 700
  26. 10
  27. 4300
  28. 8100
  29. 2
  30. 40
  31. 15
  32. 2400
  33. 0.75
  34. 1050
  35. 450
  36. 16
  37. 800
  38. 3100
  39. 1
  40. 6300

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