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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 193 · 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) 1000 (b) 60 (c) 100 (d) 10
  2. 2.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ How many milliseconds is a wait of 5 seconds?
  4. 4.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
  5. 5.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  6. 6.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
  7. 7.⏱️ 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
  8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 2 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ How many milliseconds is a wait of 0.9 seconds?
  11. 11.⏱️ repeat 7 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  12. 12.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 900 ms }
    How many times does the LED blink in 6 seconds?
  13. 13.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  14. 14.⏱️ How many milliseconds is a wait of 3.7 seconds?
  15. 15.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 10 seconds?
  17. 17.⏱️ How many milliseconds is a wait of 1.1 seconds?
  18. 18.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  19. 19.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  20. 20.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ repeat 3 times { buzzer ON; wait 700 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  22. 22.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 18 seconds?
  25. 25.⏱️ How many milliseconds is a wait of 1.3 seconds?
  26. 26.⏱️ How many milliseconds is a wait of 4.9 seconds?
  27. 27.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 1950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 12 seconds?
  30. 30.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
  32. 32.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ How many milliseconds is a wait of 2.3 seconds?
  34. 34.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  35. 35.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  36. 36.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
  37. 37.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ repeat 5 times { buzzer ON; wait 100 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 3.6 seconds?
  40. 40.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?

Answer key

  1. 1000
  2. 8400
  3. 5000
  4. 1100
  5. 2.25
  6. 700
  7. pauses for half a second
  8. 1
  9. 1150
  10. 900
  11. 4200
  12. 6
  13. 6.5
  14. 3700
  15. 1250
  16. 20
  17. 1100
  18. 3
  19. 1450
  20. 6000
  21. 5100
  22. 1400
  23. 7.75
  24. 45
  25. 1300
  26. 4900
  27. 1200
  28. 7
  29. 6
  30. 7000
  31. 4
  32. 3300
  33. 2300
  34. 2
  35. 1.25
  36. 5.5
  37. 4200
  38. 1500
  39. 3600
  40. 2200

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