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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 313 · 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 4.1 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 4.8 seconds?
  3. 3.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 2 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 2.2 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 4.3 seconds?
  8. 8.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  9. 9.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  13. 13.⏱️ How many milliseconds is a wait of 1.1 seconds?
  14. 14.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  17. 17.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 8 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  23. 23.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 0.8 seconds?
  26. 26.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  30. 30.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1600 ms }
    How many times does the LED blink in 8 seconds?
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  37. 37.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?

Answer key

  1. 4100
  2. 4800
  3. 0.25
  4. 1000
  5. 1
  6. 2200
  7. 4300
  8. 1000
  9. 6500
  10. pauses for half a second
  11. 950
  12. 5
  13. 1100
  14. 7800
  15. 600
  16. 4.75
  17. 9.25
  18. 10000
  19. 1100
  20. 10
  21. 4
  22. 12
  23. 1200
  24. 5
  25. 800
  26. 5600
  27. 850
  28. 0.75
  29. 36
  30. 1800
  31. 4
  32. 2400
  33. 10
  34. 15
  35. 1700
  36. 35
  37. 8500
  38. 3200
  39. 950
  40. 9800

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