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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 799 · 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) 1000 (d) 100
  2. 2.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 16 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 4.5 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 0.4 seconds?
  8. 8.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 16 seconds?
  9. 9.⏱️ How many milliseconds is a wait of 1.2 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 2.2 seconds?
  11. 11.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  14. 14.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) blinks 500 times (c) turns the LED off (d) waits 500 seconds
  16. 16.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 8 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 2.9 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 12 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 7 seconds?
  24. 24.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 2.4 seconds?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ repeat 9 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  29. 29.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  30. 30.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 4 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ How many milliseconds is a wait of 3.5 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 1.9 seconds?
  37. 37.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ How many milliseconds is a wait of 3.3 seconds?

Answer key

  1. 1000
  2. 0.5
  3. 8
  4. 850
  5. 4500
  6. 1000
  7. 400
  8. 8
  9. 1200
  10. 2200
  11. 900
  12. 800
  13. 2
  14. 2800
  15. pauses for half a second
  16. 2000
  17. 8.5
  18. 32
  19. 2900
  20. 30
  21. 250
  22. 1600
  23. 7
  24. 10000
  25. 2400
  26. 4800
  27. 10800
  28. 850
  29. 0.25
  30. 950
  31. 650
  32. 4.25
  33. 3600
  34. 4800
  35. 3500
  36. 1900
  37. 1.5
  38. 3
  39. 14000
  40. 3300

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