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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 360 · 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) 100 (b) 60 (c) 10 (d) 1000
  2. 2.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 1.3 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ How many milliseconds is a wait of 0.6 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 1.1 seconds?
  7. 7.⏱️ repeat 4 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  14. 14.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 5 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 8 seconds?
  19. 19.⏱️ repeat 2 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  21. 21.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  24. 24.⏱️ How many milliseconds is a wait of 3.4 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 0.2 seconds?
  26. 26.⏱️ repeat 5 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  28. 28.⏱️ How many milliseconds is a wait of 2.5 seconds?
  29. 29.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  30. 30.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 1 second?
  34. 34.⏱️ How many milliseconds is a wait of 1.5 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 7 seconds?
  37. 37.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
  38. 38.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 1000
  2. 3400
  3. 1300
  4. 1100
  5. 600
  6. 1100
  7. 2800
  8. 6300
  9. 7.25
  10. 1250
  11. 1400
  12. 3.25
  13. 1
  14. 950
  15. 11400
  16. 50
  17. 5000
  18. 8
  19. 1800
  20. pauses for half a second
  21. 650
  22. 0.5
  23. 1150
  24. 3400
  25. 200
  26. 6000
  27. 50
  28. 2500
  29. 7200
  30. 600
  31. 1350
  32. 350
  33. 5
  34. 1500
  35. 900
  36. 7
  37. 5
  38. 20
  39. 0.75
  40. 10

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