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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 967 · 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 is a wait of 0.6 seconds?
  2. 2.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  3. 3.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  6. 6.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  7. 7.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 4 seconds?
  9. 9.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  10. 10.⏱️ How many milliseconds is a wait of 0.4 seconds?
  11. 11.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ How many milliseconds is a wait of 2.5 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 20 seconds?
  17. 17.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  18. 18.⏱️ How many milliseconds is a wait of 4.1 seconds?
  19. 19.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  21. 21.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  25. 25.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  26. 26.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  27. 27.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ How many milliseconds is a wait of 2.3 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  30. 30.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 2 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.7 seconds?
  33. 33.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
  34. 34.⏱️ loop forever { LED ON; wait 1750 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 10 seconds?
  35. 35.⏱️ How many milliseconds is a wait of 2.6 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 7 seconds?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 2 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 2500 ms”. How many seconds is that? =

Answer key

  1. 600
  2. 3.5
  3. 15
  4. 1400
  5. 3.75
  6. pauses for half a second
  7. 2.25
  8. 2
  9. 5000
  10. 400
  11. 7.75
  12. 8.25
  13. 8
  14. 1600
  15. 2500
  16. 50
  17. 1.25
  18. 4100
  19. 750
  20. 3.25
  21. 9000
  22. 300
  23. 3300
  24. 1000
  25. 4
  26. 10
  27. 4800
  28. 2300
  29. 10
  30. 8.75
  31. 4
  32. 1700
  33. 6.75
  34. 5
  35. 2600
  36. 14
  37. 2600
  38. 1
  39. 1100
  40. 2.5

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