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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 797 · 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 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
  4. 4.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) turns the LED off (c) waits 500 seconds (d) blinks 500 times
  6. 6.⏱️ How many milliseconds is a wait of 1 seconds?
  7. 7.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 1.8 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds is a wait of 4.9 seconds?
  16. 16.⏱️ How many milliseconds is a wait of 3.9 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  19. 19.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  21. 21.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 4.4 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 1500 ms }
    How many times does the LED blink in 6 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  27. 27.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ How many milliseconds is a wait of 3.3 seconds?
  31. 31.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 0.7 seconds?
  36. 36.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 9500 ms”. How many seconds is that? =

Answer key

  1. 850
  2. 30
  3. 1000
  4. 800
  5. pauses for half a second
  6. 1000
  7. 6.5
  8. 50
  9. 950
  10. 2.75
  11. 1800
  12. 1600
  13. 0.75
  14. 1350
  15. 4900
  16. 3900
  17. 8
  18. 35
  19. 2.5
  20. 28
  21. 3000
  22. 450
  23. 4400
  24. 4
  25. 3
  26. 28
  27. 4.25
  28. 1450
  29. 7000
  30. 3300
  31. 6.25
  32. 10800
  33. 500
  34. 400
  35. 700
  36. 6.75
  37. 8
  38. 1250
  39. 950
  40. 9.5

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