← Blink programs and delays lesson New set →

Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 925 · 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 0.5 seconds?
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  3. 3.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  4. 4.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 0.6 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 4.2 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  11. 11.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) turns the LED off (c) blinks 500 times (d) waits 500 seconds
  12. 12.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  18. 18.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 14 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 7 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  25. 25.⏱️ How many milliseconds is a wait of 1.1 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 0.3 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 4 seconds?
  31. 31.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 3.3 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ How many milliseconds is a wait of 1.4 seconds?
  38. 38.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 16 seconds?

Answer key

  1. 500
  2. 1000
  3. 1
  4. 8800
  5. 2
  6. 1200
  7. 600
  8. 4200
  9. 1150
  10. 4
  11. pauses for half a second
  12. 9.25
  13. 400
  14. 5
  15. 7200
  16. 1450
  17. 8.25
  18. 5.75
  19. 35
  20. 7
  21. 12
  22. 4.5
  23. 1050
  24. 0.75
  25. 1100
  26. 300
  27. 20
  28. 1100
  29. 1250
  30. 2
  31. 3000
  32. 11200
  33. 1.5
  34. 3300
  35. 350
  36. 550
  37. 1400
  38. 0.5
  39. 4
  40. 40

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