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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 964 · 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 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ How many milliseconds is a wait of 2.5 seconds?
  3. 3.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds is a wait of 2.2 seconds?
  5. 5.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 5 seconds?
  9. 9.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  10. 10.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  11. 11.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 1000 (d) 10
  16. 16.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ How many milliseconds is a wait of 0.7 seconds?
  19. 19.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  20. 20.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 14 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 1.5 seconds?
  22. 22.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ How many milliseconds is a wait of 2.3 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ How many milliseconds is a wait of 1.4 seconds?
  28. 28.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  32. 32.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  34. 34.⏱️ How many milliseconds is a wait of 4.6 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  38. 38.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  39. 39.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 6000
  2. 2500
  3. 2200
  4. 2200
  5. 4.5
  6. 1050
  7. 850
  8. 5000
  9. 1.5
  10. pauses for half a second
  11. 5000
  12. 5
  13. 5
  14. 1300
  15. 1000
  16. 800
  17. 700
  18. 700
  19. 3.25
  20. 35
  21. 1500
  22. 1.25
  23. 24
  24. 1650
  25. 2300
  26. 1800
  27. 1400
  28. 8500
  29. 750
  30. 8400
  31. 2
  32. 1050
  33. 8.75
  34. 4600
  35. 300
  36. 9.75
  37. 750
  38. 3.5
  39. 9
  40. 2

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