← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 977 · 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.⏱️ How many milliseconds is a wait of 3.2 seconds?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  3. 3.⏱️ How many milliseconds is a wait of 0.6 seconds?
  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.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 2.6 seconds?
  11. 11.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 3.9 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 0.7 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  18. 18.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 3.1 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  23. 23.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 4 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 2 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 4.8 seconds?
  27. 27.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 2.9 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 6 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ How many milliseconds is a wait of 0.5 seconds?
  37. 37.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  40. 40.⏱️ A program says “wait 1000 ms”. How many seconds is that? =

Answer key

  1. 3200
  2. 1000
  3. 600
  4. pauses for half a second
  5. 950
  6. 1900
  7. 1250
  8. 1050
  9. 5600
  10. 2600
  11. 5.75
  12. 3900
  13. 1650
  14. 700
  15. 950
  16. 350
  17. 6.75
  18. 4.25
  19. 3100
  20. 1300
  21. 30
  22. 10
  23. 2400
  24. 4000
  25. 2000
  26. 4800
  27. 0.25
  28. 2900
  29. 4
  30. 24
  31. 4
  32. 1150
  33. 25
  34. 1350
  35. 8400
  36. 500
  37. 3600
  38. 550
  39. 6.25
  40. 1

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