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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 406 · 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 are in 1 second? (a) 60 (b) 10 (c) 1000 (d) 100
  2. 2.⏱️ How many milliseconds is a wait of 1.3 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 2.7 seconds?
  4. 4.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  9. 9.⏱️ How many milliseconds is a wait of 1.6 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 4 seconds?
  11. 11.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  12. 12.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 10 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 3 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 9 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 1050 ms }
    How many times does the LED blink in 12 seconds?
  18. 18.⏱️ repeat 5 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 18 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ How many milliseconds is a wait of 2.4 seconds?
  23. 23.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 1.8 seconds?
  25. 25.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds is a wait of 0.1 seconds?
  29. 29.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 1 second?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 18 seconds?
  32. 32.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 7 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 3.1 seconds?
  36. 36.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 8 seconds?
  38. 38.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 1.5 seconds?

Answer key

  1. 1000
  2. 1300
  3. 2700
  4. 8.5
  5. 6
  6. 650
  7. 400
  8. 4
  9. 1600
  10. 4000
  11. pauses for half a second
  12. 3.75
  13. 20
  14. 10
  15. 3
  16. 45
  17. 6
  18. 8000
  19. 45
  20. 1450
  21. 2000
  22. 2400
  23. 9.5
  24. 1800
  25. 0.75
  26. 700
  27. 900
  28. 100
  29. 2100
  30. 1
  31. 45
  32. 6000
  33. 20
  34. 7
  35. 3100
  36. 8000
  37. 16
  38. 6.5
  39. 1400
  40. 1500

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