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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 890 · 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 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  3. 3.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 5 seconds?
  7. 7.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  8. 8.⏱️ How many milliseconds is a wait of 0.8 seconds?
  9. 9.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 1400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 6 seconds?
  11. 11.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  12. 12.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ How many milliseconds is a wait of 3 seconds?
  16. 16.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 6 seconds?
  18. 18.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 1000 (c) 60 (d) 10
  19. 19.⏱️ How many milliseconds is a wait of 0.3 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 2.9 seconds?
  21. 21.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  22. 22.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 3.2 seconds?
  24. 24.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 3.8 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 1100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 14 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 4.6 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 4.1 seconds?
  32. 32.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 4 seconds?
  38. 38.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 4000
  2. pauses for half a second
  3. 5200
  4. 1050
  5. 1000
  6. 10
  7. 8
  8. 800
  9. 8.75
  10. 3
  11. 2
  12. 2700
  13. 4
  14. 16000
  15. 3000
  16. 6
  17. 15
  18. 1000
  19. 300
  20. 2900
  21. 5.5
  22. 1550
  23. 3200
  24. 3900
  25. 6.5
  26. 3800
  27. 1
  28. 35
  29. 4600
  30. 650
  31. 4100
  32. 13000
  33. 2200
  34. 450
  35. 5
  36. 25
  37. 4000
  38. 6600
  39. 0.25
  40. 1100

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