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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 592 · 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.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  2. 2.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  3. 3.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
  4. 4.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  5. 5.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 10 (c) 100 (d) 60
  6. 6.⏱️ How many milliseconds is a wait of 0.9 seconds?
  7. 7.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 2 seconds?
  8. 8.⏱️ repeat 2 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  9. 9.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  10. 10.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
  11. 11.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
  13. 13.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
  14. 14.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  15. 15.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 7 seconds?
  16. 16.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
  17. 17.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
  18. 18.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  22. 22.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ How many milliseconds is a wait of 0.4 seconds?
  24. 24.⏱️ How many milliseconds is a wait of 3.3 seconds?
  25. 25.⏱️ loop forever { LED ON; wait 1650 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?
  26. 26.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  27. 27.⏱️ How many milliseconds is a wait of 4.6 seconds?
  28. 28.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 18 seconds?
  29. 29.⏱️ How many milliseconds is a wait of 3.5 seconds?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  31. 31.⏱️ How many milliseconds is a wait of 2.2 seconds?
  32. 32.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 1250 ms; LED OFF; wait 750 ms }
    How many times does the LED blink in 10 seconds?
  34. 34.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  35. 35.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
  36. 36.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  37. 37.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 4 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 10 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 750 ms; LED OFF; wait 1250 ms }
    How many times does the LED blink in 2 seconds?

Answer key

  1. 1
  2. 1500
  3. pauses for half a second
  4. 2
  5. 1000
  6. 900
  7. 5
  8. 800
  9. 10
  10. 4
  11. 2.25
  12. 3.75
  13. 2.5
  14. 2000
  15. 28
  16. 40
  17. 15
  18. 12000
  19. 20
  20. 20
  21. 8
  22. 1050
  23. 400
  24. 3300
  25. 1
  26. 8.5
  27. 4600
  28. 9
  29. 3500
  30. 450
  31. 2200
  32. 3600
  33. 5
  34. 1400
  35. 6.25
  36. 950
  37. 50
  38. 10
  39. 20
  40. 1

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