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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 191 · 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 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 2 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 3 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 3.1 seconds?
  9. 9.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
  10. 10.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  11. 11.⏱️ How many milliseconds is a wait of 5 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 4.3 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds is a wait of 3.5 seconds?
  18. 18.⏱️ repeat 8 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
  20. 20.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 5 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  23. 23.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 3.8 seconds?
  25. 25.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  26. 26.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  27. 27.⏱️ How many milliseconds is a wait of 1.1 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 2 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 12 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 2.6 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 4.4 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ How many milliseconds is a wait of 1.6 seconds?
  38. 38.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 0.2 seconds?

Answer key

  1. 10800
  2. 9100
  3. 2
  4. 1500
  5. 12
  6. 10
  7. 750
  8. 3100
  9. pauses for half a second
  10. 1
  11. 5000
  12. 40
  13. 950
  14. 4300
  15. 650
  16. 950
  17. 3500
  18. 8800
  19. 1000
  20. 5
  21. 1550
  22. 25
  23. 9.75
  24. 3800
  25. 2000
  26. 0.5
  27. 1100
  28. 1200
  29. 4.75
  30. 1000
  31. 6
  32. 2600
  33. 4400
  34. 25
  35. 9
  36. 1200
  37. 1600
  38. 8.5
  39. 4800
  40. 200

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