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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 702 · 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.⏱️ 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
  2. 2.⏱️ How many milliseconds is a wait of 3.2 seconds?
  3. 3.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 10 (c) 60 (d) 1000
  4. 4.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds is a wait of 4.7 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
  8. 8.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 7 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 2 seconds?
  10. 10.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ A program says “wait 250 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 2.1 seconds?
  13. 13.⏱️ How many milliseconds is a wait of 0.9 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 2 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  17. 17.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  21. 21.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  22. 22.⏱️ How many milliseconds is a wait of 4.5 seconds?
  23. 23.⏱️ How many milliseconds is a wait of 4.4 seconds?
  24. 24.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 2.6 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 7 seconds?
  29. 29.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  32. 32.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  33. 33.⏱️ repeat 10 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
  35. 35.⏱️ How many milliseconds is a wait of 4.2 seconds?
  36. 36.⏱️ How many milliseconds is a wait of 2.5 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1350 ms }
    How many times does the LED blink in 16 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?

Answer key

  1. pauses for half a second
  2. 3200
  3. 1000
  4. 3000
  5. 4700
  6. 650
  7. 9.75
  8. 35
  9. 10
  10. 800
  11. 0.25
  12. 2100
  13. 900
  14. 8
  15. 2
  16. 10
  17. 2600
  18. 7.75
  19. 1150
  20. 450
  21. 7.25
  22. 4500
  23. 4400
  24. 1800
  25. 4.25
  26. 2600
  27. 30
  28. 7
  29. 900
  30. 1100
  31. 2800
  32. 6.25
  33. 15000
  34. 9.25
  35. 4200
  36. 2500
  37. 20
  38. 1100
  39. 8
  40. 12

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