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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 196 · 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 700 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 60 (d) 100
  6. 6.⏱️ loop forever { LED ON; wait 1100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 4 seconds?
  7. 7.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  13. 13.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ How many milliseconds is a wait of 2.1 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  16. 16.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  17. 17.⏱️ How many milliseconds is a wait of 1.1 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 20 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  20. 20.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) waits 500 seconds (d) turns the LED off
  21. 21.⏱️ How many milliseconds is a wait of 2 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  23. 23.⏱️ How many milliseconds is a wait of 3.8 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 3.4 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 12 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 18 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 12 seconds?
  32. 32.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  33. 33.⏱️ How many milliseconds is a wait of 0.2 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ repeat 7 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 1.6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 1700
  2. 1250
  3. 1500
  4. 2400
  5. 1000
  6. 2
  7. 1.25
  8. 850
  9. 14
  10. 1300
  11. 700
  12. 9.25
  13. 4800
  14. 2100
  15. 24
  16. 9.75
  17. 1100
  18. 10
  19. 4
  20. pauses for half a second
  21. 2000
  22. 5
  23. 3800
  24. 3400
  25. 1100
  26. 30
  27. 1450
  28. 8.75
  29. 1550
  30. 45
  31. 30
  32. 6.75
  33. 200
  34. 1700
  35. 7000
  36. 5
  37. 1600
  38. 35
  39. 500
  40. 1350

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