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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 680 · 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.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 100 (c) 60 (d) 1000
  3. 3.⏱️ 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
  4. 4.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 2.7 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 1.3 seconds?
  9. 9.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ How many milliseconds is a wait of 3.1 seconds?
  12. 12.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 4.1 seconds?
  18. 18.⏱️ How many milliseconds is a wait of 0.9 seconds?
  19. 19.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 1 second?
  21. 21.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 1650 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 3.3 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  26. 26.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 12 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 1.7 seconds?
  30. 30.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  31. 31.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ How many milliseconds is a wait of 4.3 seconds?
  33. 33.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 1 second?
  35. 35.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 600 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 5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?

Answer key

  1. 2.5
  2. 1000
  3. pauses for half a second
  4. 8100
  5. 10
  6. 2700
  7. 350
  8. 1300
  9. 10
  10. 1000
  11. 3100
  12. 3
  13. 700
  14. 7.25
  15. 300
  16. 5.75
  17. 4100
  18. 900
  19. 5.5
  20. 1
  21. 3
  22. 1000
  23. 3300
  24. 12
  25. 40
  26. 2800
  27. 1200
  28. 6
  29. 1700
  30. 1
  31. 6000
  32. 4300
  33. 7.75
  34. 2
  35. 1050
  36. 25
  37. 550
  38. 3.75
  39. 700
  40. 4800

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