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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 854 · 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) 10 (c) 100 (d) 1000
  2. 2.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 3.2 seconds?
  5. 5.⏱️ A program says “wait 7750 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.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  8. 8.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  11. 11.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 0.9 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  15. 15.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 4 seconds?
  26. 26.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 2 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 4 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 2.7 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 3.1 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 2.6 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 2.4 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 4.3 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 7 seconds?

Answer key

  1. 1000
  2. 5500
  3. 9.5
  4. 3200
  5. 7.75
  6. 1050
  7. pauses for half a second
  8. 3.25
  9. 40
  10. 45
  11. 5.75
  12. 900
  13. 900
  14. 0.5
  15. 9.75
  16. 1050
  17. 2200
  18. 550
  19. 5.5
  20. 4800
  21. 8.75
  22. 6300
  23. 6.25
  24. 3
  25. 8
  26. 750
  27. 1550
  28. 2
  29. 1200
  30. 10800
  31. 10
  32. 2700
  33. 3100
  34. 4
  35. 2600
  36. 2400
  37. 12
  38. 4300
  39. 1100
  40. 7

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