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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 660 · 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 1.7 seconds?
  2. 2.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 1 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 3.6 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 1 second?
  7. 7.⏱️ How many milliseconds is a wait of 2.2 seconds?
  8. 8.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  9. 9.⏱️ How many milliseconds is a wait of 4.2 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  11. 11.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  12. 12.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 20 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 3.4 seconds?
  18. 18.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 1000 (d) 10
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 3.5 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  22. 22.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) blinks 500 times (d) pauses for half a second
  23. 23.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  24. 24.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  27. 27.⏱️ repeat 10 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  36. 36.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1700
  2. 10
  3. 1000
  4. 600
  5. 3600
  6. 1
  7. 2200
  8. 2.5
  9. 4200
  10. 10
  11. 2.75
  12. 14400
  13. 10
  14. 1000
  15. 1
  16. 1100
  17. 3400
  18. 1000
  19. 12
  20. 3500
  21. 20
  22. pauses for half a second
  23. 9.5
  24. 6600
  25. 4.25
  26. 3.75
  27. 15000
  28. 950
  29. 4.5
  30. 10
  31. 1450
  32. 1550
  33. 0.25
  34. 1300
  35. 5.5
  36. 11000
  37. 6.25
  38. 25
  39. 450
  40. 800

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