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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 301 · 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.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  4. 4.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ 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
  7. 7.⏱️ How many milliseconds is a wait of 2.5 seconds?
  8. 8.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  10. 10.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 16 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  13. 13.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 7 times { buzzer ON; wait 400 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 4.2 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  20. 20.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1150 ms }
    How many times does the LED blink in 8 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 2.1 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ How many milliseconds is a wait of 1.1 seconds?
  30. 30.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 3.1 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 4.1 seconds?
  33. 33.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  37. 37.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ How many milliseconds is a wait of 0.6 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 5400
  2. 0.75
  3. 1000
  4. 3.75
  5. 1200
  6. pauses for half a second
  7. 2500
  8. 7.25
  9. 4
  10. 6.25
  11. 8
  12. 5
  13. 6.75
  14. 4200
  15. 900
  16. 400
  17. 2.75
  18. 4200
  19. 20
  20. 6
  21. 4
  22. 500
  23. 950
  24. 2100
  25. 32
  26. 1850
  27. 850
  28. 800
  29. 1100
  30. 3300
  31. 3100
  32. 4100
  33. 4200
  34. 1550
  35. 12600
  36. 15
  37. 5400
  38. 600
  39. 950
  40. 600

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