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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 195 · 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 6250 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 4.3 seconds?
  3. 3.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  5. 5.⏱️ How many milliseconds is a wait of 1.3 seconds?
  6. 6.⏱️ How many milliseconds is a wait of 1.9 seconds?
  7. 7.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 60 (c) 100 (d) 10
  8. 8.⏱️ How many milliseconds is a wait of 2.9 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 5 seconds?
  10. 10.⏱️ How many milliseconds is a wait of 1.1 seconds?
  11. 11.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
  12. 12.⏱️ How many milliseconds is a wait of 4.4 seconds?
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
  14. 14.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
  15. 15.⏱️ A program says “wait 1500 ms”. How many seconds is that? =
  16. 16.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  17. 17.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
  18. 18.⏱️ repeat 4 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  19. 19.⏱️ How many milliseconds is a wait of 1.6 seconds?
  20. 20.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 4 seconds?
  21. 21.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  23. 23.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  24. 24.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  25. 25.⏱️ A program says “wait 500 ms”. How many seconds is that? =
  26. 26.⏱️ How many milliseconds is a wait of 1.4 seconds?
  27. 27.⏱️ How many milliseconds is a wait of 4 seconds?
  28. 28.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 6 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 8 times { buzzer ON; wait 200 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 4 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 4.2 seconds?
  35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
  36. 36.⏱️ How many milliseconds is a wait of 2.2 seconds?
  37. 37.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  39. 39.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ A program says “wait 7250 ms”. How many seconds is that? =

Answer key

  1. 6.25
  2. 4300
  3. 1800
  4. 10
  5. 1300
  6. 1900
  7. 1000
  8. 2900
  9. 5
  10. 1100
  11. 3.25
  12. 4400
  13. 35
  14. pauses for half a second
  15. 1.5
  16. 1200
  17. 7
  18. 3200
  19. 1600
  20. 4
  21. 450
  22. 1350
  23. 7800
  24. 8
  25. 0.5
  26. 1400
  27. 4000
  28. 1.25
  29. 750
  30. 30
  31. 950
  32. 9600
  33. 10
  34. 4200
  35. 2
  36. 2200
  37. 1400
  38. 20
  39. 1150
  40. 7.25

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