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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 790 · 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) 60 (d) 100
  2. 2.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  4. 4.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
  5. 5.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  7. 7.⏱️ How many milliseconds is a wait of 1.3 seconds?
  8. 8.⏱️ How many milliseconds is a wait of 4.6 seconds?
  9. 9.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ How many milliseconds is a wait of 3.7 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 10 seconds?
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) waits 500 seconds (d) pauses for half a second
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 12 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 4.3 seconds?
  22. 22.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds is a wait of 3.2 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ How many milliseconds is a wait of 3.9 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 4.2 seconds?
  30. 30.⏱️ How many milliseconds is a wait of 2.8 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 10 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  33. 33.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 3 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 0.7 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 3 seconds?
  37. 37.⏱️ How many milliseconds is a wait of 1 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  40. 40.⏱️ How many milliseconds is a wait of 2.2 seconds?

Answer key

  1. 1000
  2. 9.25
  3. 850
  4. 4.75
  5. 850
  6. 1
  7. 1300
  8. 4600
  9. 6000
  10. 1400
  11. 1050
  12. 3600
  13. 3700
  14. 10
  15. 4800
  16. 1850
  17. pauses for half a second
  18. 1150
  19. 9000
  20. 30
  21. 4300
  22. 3600
  23. 7200
  24. 3200
  25. 1050
  26. 10500
  27. 1200
  28. 3900
  29. 4200
  30. 2800
  31. 5
  32. 45
  33. 3000
  34. 12
  35. 700
  36. 3000
  37. 1000
  38. 5
  39. 1.25
  40. 2200

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