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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 610 · 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.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  2. 2.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  3. 3.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds is a wait of 1.5 seconds?
  5. 5.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 1.7 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 3.7 seconds?
  8. 8.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 1.8 seconds?
  11. 11.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  12. 12.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  15. 15.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) waits 500 seconds (d) turns the LED off
  16. 16.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 8 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ loop forever { LED ON; wait 1100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 10 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 1.1 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  27. 27.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 7 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 16 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  33. 33.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  34. 34.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 1 second?
  36. 36.⏱️ repeat 8 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  38. 38.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 1 second?

Answer key

  1. 12
  2. 6.75
  3. 2500
  4. 1500
  5. 4.75
  6. 1700
  7. 3700
  8. 5400
  9. 800
  10. 1800
  11. 1000
  12. 3300
  13. 600
  14. 50
  15. pauses for half a second
  16. 8
  17. 150
  18. 5
  19. 900
  20. 4800
  21. 1200
  22. 9.5
  23. 500
  24. 1050
  25. 1100
  26. 9
  27. 2.5
  28. 7
  29. 10
  30. 40
  31. 10
  32. 2
  33. 7
  34. 7.5
  35. 1
  36. 8800
  37. 25
  38. 1
  39. 3200
  40. 2

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