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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 436 · 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) 60 (b) 100 (c) 10 (d) 1000
  2. 2.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  3. 3.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  5. 5.⏱️ How many milliseconds is a wait of 0.7 seconds?
  6. 6.⏱️ 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
  7. 7.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  9. 9.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  12. 12.⏱️ repeat 10 times { buzzer ON; wait 700 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  13. 13.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  14. 14.⏱️ How many milliseconds is a wait of 0.9 seconds?
  15. 15.⏱️ How many milliseconds is a wait of 2.1 seconds?
  16. 16.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  17. 17.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 9 seconds?
  18. 18.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  21. 21.⏱️ How many milliseconds is a wait of 3 seconds?
  22. 22.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ How many milliseconds is a wait of 3.7 seconds?
  24. 24.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 1150 ms; LED OFF; wait 850 ms }
    How many times does the LED blink in 18 seconds?
  26. 26.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  27. 27.⏱️ How many milliseconds is a wait of 4.8 seconds?
  28. 28.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  29. 29.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 1 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 1 second?
  32. 32.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
  33. 33.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 7 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 3 seconds?
  37. 37.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1000
  2. 1.5
  3. 10200
  4. 7.75
  5. 700
  6. pauses for half a second
  7. 750
  8. 24
  9. 2.5
  10. 600
  11. 400
  12. 11000
  13. 1350
  14. 900
  15. 2100
  16. 2400
  17. 18
  18. 1550
  19. 2800
  20. 15
  21. 3000
  22. 2100
  23. 3700
  24. 400
  25. 9
  26. 5400
  27. 4800
  28. 2700
  29. 4
  30. 1000
  31. 4
  32. 5
  33. 14
  34. 4
  35. 850
  36. 3
  37. 10
  38. 15
  39. 800
  40. 2400

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