← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 843 · 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 6000 ms”. How many seconds is that? =
  2. 2.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  3. 3.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 18 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 1 second?
  7. 7.⏱️ How many milliseconds is a wait of 3.1 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 5 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 0.5 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 1850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  12. 12.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  13. 13.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  14. 14.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 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 2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  20. 20.⏱️ repeat 5 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 16 seconds?
  22. 22.⏱️ How many milliseconds is a wait of 4.6 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 1.5 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  26. 26.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ How many milliseconds is a wait of 1 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ How many milliseconds is a wait of 4.5 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  32. 32.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 1850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 18 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 6
  2. 1
  3. 3.75
  4. 45
  5. 900
  6. 1
  7. 3100
  8. 5
  9. 2
  10. 500
  11. 5
  12. pauses for half a second
  13. 1000
  14. 1350
  15. 7200
  16. 10
  17. 1550
  18. 4000
  19. 8.25
  20. 5500
  21. 40
  22. 4600
  23. 1500
  24. 1550
  25. 10
  26. 3000
  27. 1000
  28. 1950
  29. 4500
  30. 15
  31. 24
  32. 2.25
  33. 4
  34. 850
  35. 9
  36. 650
  37. 5.5
  38. 1450
  39. 40
  40. 400

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