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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 624 · 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 is a wait of 3.7 seconds?
  2. 2.⏱️ How many milliseconds is a wait of 0.8 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 1.2 seconds?
  4. 4.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) waits 500 seconds (d) turns the LED off
  5. 5.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  6. 6.⏱️ How many milliseconds is a wait of 4.4 seconds?
  7. 7.⏱️ How many milliseconds is a wait of 2.6 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  11. 11.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  14. 14.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  15. 15.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
  18. 18.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  19. 19.⏱️ How many milliseconds is a wait of 1.5 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  22. 22.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 4 seconds?
  25. 25.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  26. 26.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  27. 27.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  28. 28.⏱️ How many milliseconds is a wait of 5 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 6 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  32. 32.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 3 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 0.2 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 7 seconds?
  39. 39.⏱️ How many milliseconds is a wait of 0.1 seconds?
  40. 40.⏱️ How many milliseconds is a wait of 3.5 seconds?

Answer key

  1. 3700
  2. 800
  3. 1200
  4. pauses for half a second
  5. 6.25
  6. 4400
  7. 2600
  8. 1050
  9. 650
  10. 8.75
  11. 1100
  12. 1700
  13. 45
  14. 0.25
  15. 1000
  16. 550
  17. 1000
  18. 5.5
  19. 1500
  20. 1000
  21. 28
  22. 1600
  23. 3600
  24. 2
  25. 4.5
  26. 10
  27. 8.5
  28. 5000
  29. 6
  30. 1350
  31. 3.75
  32. 1.5
  33. 6000
  34. 1200
  35. 3
  36. 200
  37. 750
  38. 14
  39. 100
  40. 3500

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