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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 947 · 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.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  2. 2.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  3. 3.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  4. 4.⏱️ How many milliseconds is a wait of 4.6 seconds?
  5. 5.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  6. 6.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  8. 8.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) turns the LED off (c) waits 500 seconds (d) blinks 500 times
  9. 9.⏱️ How many milliseconds is a wait of 2.9 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 0.1 seconds?
  11. 11.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 0.8 seconds?
  13. 13.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  14. 14.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  15. 15.⏱️ How many milliseconds is a wait of 1.1 seconds?
  16. 16.⏱️ How many milliseconds is a wait of 2.3 seconds?
  17. 17.⏱️ repeat 5 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  19. 19.⏱️ loop forever { LED ON; wait 1950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 2 seconds?
  20. 20.⏱️ How many milliseconds is a wait of 0.9 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  23. 23.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  29. 29.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ How many milliseconds is a wait of 1.8 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 1500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 8 seconds?
  32. 32.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 12 seconds?
  33. 33.⏱️ repeat 4 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  34. 34.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  36. 36.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 6 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  39. 39.⏱️ How many milliseconds is a wait of 1.3 seconds?
  40. 40.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?

Answer key

  1. 3200
  2. 2.75
  3. 9.5
  4. 4600
  5. 1550
  6. 850
  7. 1000
  8. pauses for half a second
  9. 2900
  10. 100
  11. 7.75
  12. 800
  13. 15300
  14. 4
  15. 1100
  16. 2300
  17. 7500
  18. 1550
  19. 1
  20. 900
  21. 15
  22. 14
  23. 3.75
  24. 1300
  25. 1300
  26. 650
  27. 550
  28. 5
  29. 1050
  30. 1800
  31. 4
  32. 6
  33. 4000
  34. 1600
  35. 1200
  36. 7800
  37. 24
  38. 1500
  39. 1300
  40. 4000

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