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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 274 · 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.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  2. 2.⏱️ How many milliseconds is a wait of 2.8 seconds?
  3. 3.⏱️ How many milliseconds is a wait of 1.1 seconds?
  4. 4.⏱️ How many milliseconds is a wait of 3.8 seconds?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 9 seconds?
  7. 7.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  8. 8.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 2.9 seconds?
  11. 11.⏱️ repeat 4 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 12 seconds?
  14. 14.⏱️ How many milliseconds is a wait of 3.3 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  17. 17.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  18. 18.⏱️ How many milliseconds is a wait of 4.4 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  21. 21.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ repeat 4 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 2.6 seconds?
  25. 25.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  26. 26.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 2.1 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 2 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 3 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 16 seconds?
  36. 36.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ How many milliseconds is a wait of 1 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 1950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?

Answer key

  1. 1100
  2. 2800
  3. 1100
  4. 3800
  5. 1000
  6. 18
  7. 5
  8. 5600
  9. 6.5
  10. 2900
  11. 2000
  12. 1700
  13. 30
  14. 3300
  15. 3
  16. 4
  17. pauses for half a second
  18. 4400
  19. 300
  20. 4.75
  21. 2500
  22. 4800
  23. 13500
  24. 2600
  25. 6.75
  26. 36
  27. 12
  28. 2100
  29. 1450
  30. 4000
  31. 15
  32. 5
  33. 3
  34. 850
  35. 40
  36. 7.25
  37. 30
  38. 1000
  39. 16
  40. 4

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