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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 928 · 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 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 0.6 seconds?
  3. 3.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  4. 4.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  6. 6.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 4 seconds?
  7. 7.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  8. 8.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
  9. 9.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 10 (d) 60
  11. 11.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  12. 12.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  16. 16.⏱️ How many milliseconds is a wait of 4.1 seconds?
  17. 17.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 2 seconds?
  19. 19.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  20. 20.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ repeat 8 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 2 seconds?
  27. 27.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  28. 28.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  30. 30.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  31. 31.⏱️ How many milliseconds is a wait of 2.5 seconds?
  32. 32.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 3 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 8 seconds?
  35. 35.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 2 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  39. 39.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 900
  2. 600
  3. 4.25
  4. 1250
  5. 2000
  6. 4
  7. 9.5
  8. 5.25
  9. 13000
  10. 1000
  11. pauses for half a second
  12. 0.25
  13. 1
  14. 5000
  15. 9
  16. 4100
  17. 3.25
  18. 2000
  19. 5.5
  20. 4
  21. 1550
  22. 1150
  23. 600
  24. 12000
  25. 25
  26. 2
  27. 9.75
  28. 7000
  29. 6.5
  30. 1.25
  31. 2500
  32. 2
  33. 6
  34. 20
  35. 4000
  36. 2
  37. 1350
  38. 4
  39. 4400
  40. 350

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