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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 355 · 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) 10 (b) 1000 (c) 100 (d) 60
  2. 2.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  3. 3.⏱️ How many milliseconds is a wait of 3.3 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 2 seconds?
  5. 5.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  6. 6.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  7. 7.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 3 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) pauses for half a second (c) blinks 500 times (d) waits 500 seconds
  11. 11.⏱️ How many milliseconds is a wait of 1 seconds?
  12. 12.⏱️ How many milliseconds is a wait of 0.2 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 1.4 seconds?
  14. 14.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  18. 18.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  20. 20.⏱️ How many milliseconds is a wait of 0.9 seconds?
  21. 21.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 6 seconds?
  24. 24.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ How many milliseconds is a wait of 0.4 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 2.1 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 2.9 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 4.7 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 10 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ How many milliseconds is a wait of 4.9 seconds?
  34. 34.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  35. 35.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ How many milliseconds is a wait of 4.4 seconds?
  38. 38.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
  39. 39.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  40. 40.⏱️ A program says “wait 500 ms”. How many seconds is that? =

Answer key

  1. 1000
  2. 7.25
  3. 3300
  4. 2000
  5. 5.75
  6. 2.25
  7. 6000
  8. 2100
  9. 2200
  10. pauses for half a second
  11. 1000
  12. 200
  13. 1400
  14. 10000
  15. 700
  16. 15
  17. 650
  18. 7
  19. 5
  20. 900
  21. 5000
  22. 6000
  23. 12
  24. 10000
  25. 400
  26. 2100
  27. 2900
  28. 4700
  29. 20
  30. 10
  31. 14
  32. 1200
  33. 4900
  34. 9
  35. 6300
  36. 3000
  37. 4400
  38. 6
  39. 2800
  40. 0.5

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