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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 317 · 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) pauses for half a second (b) waits 500 seconds (c) turns the LED off (d) blinks 500 times
  2. 2.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 60 (d) 100
  3. 3.⏱️ How many milliseconds is a wait of 4.5 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 6 seconds?
  5. 5.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 4.2 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 4.8 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ How many milliseconds is a wait of 2.7 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ How many milliseconds is a wait of 2.5 seconds?
  14. 14.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 1.2 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ How many milliseconds is a wait of 3.5 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 1.9 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ How many milliseconds is a wait of 0.1 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 1900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 12 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 2 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  31. 31.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  34. 34.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  39. 39.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?

Answer key

  1. pauses for half a second
  2. 1000
  3. 4500
  4. 3
  5. 3.5
  6. 4200
  7. 1000
  8. 4800
  9. 200
  10. 1300
  11. 2700
  12. 650
  13. 2500
  14. 3.25
  15. 650
  16. 1200
  17. 900
  18. 3500
  19. 1900
  20. 1150
  21. 100
  22. 6
  23. 2000
  24. 1350
  25. 750
  26. 1000
  27. 7200
  28. 850
  29. 2
  30. 10
  31. 0.5
  32. 750
  33. 0.75
  34. 9600
  35. 1150
  36. 850
  37. 0.25
  38. 2
  39. 9
  40. 40

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