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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 586 · 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.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  2. 2.⏱️ How many milliseconds is a wait of 1.1 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 3.8 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 2.3 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  7. 7.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 1.4 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 1.3 seconds?
  10. 10.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  11. 11.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  13. 13.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 0.6 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ How many milliseconds is a wait of 2.4 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 0.5 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 3.5 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 10 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 6 seconds?
  34. 34.⏱️ repeat 7 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 8 seconds?

Answer key

  1. pauses for half a second
  2. 1100
  3. 3800
  4. 2300
  5. 1650
  6. 10
  7. 3300
  8. 1400
  9. 1300
  10. 8.75
  11. 5600
  12. 1000
  13. 4.5
  14. 2400
  15. 5
  16. 6.25
  17. 600
  18. 500
  19. 450
  20. 600
  21. 5000
  22. 7200
  23. 2400
  24. 500
  25. 600
  26. 3000
  27. 3200
  28. 3500
  29. 1500
  30. 17000
  31. 3.25
  32. 6
  33. 3
  34. 7000
  35. 700
  36. 1650
  37. 3.75
  38. 4
  39. 1250
  40. 32

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