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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 524 · 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 700 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many times does the LED blink in 10 seconds?
  3. 3.⏱️ repeat 9 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
  5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds is a wait of 2 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 1.2 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
  11. 11.⏱️ How many milliseconds is a wait of 0.3 seconds?
  12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ 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
  14. 14.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  17. 17.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  18. 18.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 2 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 1.5 seconds?
  21. 21.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 5 seconds?
  23. 23.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  24. 24.⏱️ How many milliseconds is a wait of 0.9 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 7 seconds?
  26. 26.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  27. 27.⏱️ How many milliseconds is a wait of 2.9 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 0.1 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 1 seconds?
  30. 30.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 7 seconds?
  37. 37.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  40. 40.⏱️ How many milliseconds is a wait of 2.6 seconds?

Answer key

  1. 14000
  2. 10
  3. 10800
  4. 1000
  5. 28
  6. 1100
  7. 2000
  8. 1200
  9. 1350
  10. 20
  11. 300
  12. 1000
  13. pauses for half a second
  14. 4.75
  15. 4200
  16. 1.25
  17. 2.5
  18. 1600
  19. 4
  20. 1500
  21. 2200
  22. 10
  23. 3.25
  24. 900
  25. 7
  26. 2.75
  27. 2900
  28. 100
  29. 1000
  30. 5500
  31. 3200
  32. 1300
  33. 2000
  34. 4200
  35. 450
  36. 28
  37. 7700
  38. 3600
  39. 1.5
  40. 2600

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