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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 81 · 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) 100 (c) 10 (d) 1000
  2. 2.⏱️ How many milliseconds is a wait of 3.5 seconds?
  3. 3.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds is a wait of 0.4 seconds?
  5. 5.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  7. 7.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  9. 9.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  11. 11.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 1.7 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 12 seconds?
  16. 16.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 3 seconds?
  20. 20.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  21. 21.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ How many milliseconds is a wait of 2 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 3.2 seconds?
  24. 24.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  25. 25.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  28. 28.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 10 seconds?
  29. 29.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  30. 30.⏱️ repeat 7 times { buzzer ON; wait 500 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  33. 33.⏱️ loop forever { LED ON; wait 1350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 6 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ How many milliseconds is a wait of 0.6 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) pauses for half a second (c) turns the LED off (d) waits 500 seconds

Answer key

  1. 1000
  2. 3500
  3. 2200
  4. 400
  5. 4.5
  6. 0.5
  7. 1400
  8. 1150
  9. 1400
  10. 7
  11. 9
  12. 1700
  13. 1200
  14. 800
  15. 30
  16. 1.5
  17. 950
  18. 2800
  19. 3000
  20. 3.75
  21. 1050
  22. 2000
  23. 3200
  24. 10
  25. 950
  26. 6500
  27. 9.75
  28. 5
  29. 6
  30. 10500
  31. 8
  32. 3
  33. 3
  34. 1250
  35. 600
  36. 12
  37. 600
  38. 900
  39. 1850
  40. pauses for half a second

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