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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 976 · 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 550 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 2 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 2.6 seconds?
  4. 4.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ 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
  7. 7.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 3.7 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 5 seconds?
  13. 13.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ How many milliseconds is a wait of 4.6 seconds?
  15. 15.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 10 (d) 60
  18. 18.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  21. 21.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 4.4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 1.2 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 1900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 14 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 0.3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 20 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 1 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 2.7 seconds?

Answer key

  1. 900
  2. 2000
  3. 2600
  4. 9600
  5. 500
  6. pauses for half a second
  7. 4000
  8. 5500
  9. 1200
  10. 15
  11. 3700
  12. 5
  13. 11700
  14. 4600
  15. 6000
  16. 1900
  17. 1000
  18. 7200
  19. 2
  20. 6
  21. 2400
  22. 10
  23. 4400
  24. 550
  25. 1200
  26. 800
  27. 7
  28. 300
  29. 10
  30. 1000
  31. 1100
  32. 0.5
  33. 15000
  34. 1000
  35. 10200
  36. 50
  37. 900
  38. 4.75
  39. 32
  40. 2700

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