Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 737 · 40 questions

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.

1. 1.⏱️ How many milliseconds is a wait of 0.7 seconds?
2. 2.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) waits 500 seconds (c) pauses for half a second (d) turns the LED off
3. 3.⏱️ How many milliseconds is a wait of 1.3 seconds?
4. 4.⏱️ A program says “wait 250 ms”. How many seconds is that? =
5. 5.⏱️ How many milliseconds is a wait of 1.1 seconds?
6. 6.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
7. 7.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 150 ms }
   How many times does the LED blink in 10 seconds?
8. 8.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
   How many milliseconds does this take in all?
9. 9.⏱️ How many milliseconds is a wait of 2.6 seconds?
10. 10.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 650 ms }
    How many times does the LED blink in 1 second?
11. 11.⏱️ A program says “wait 750 ms”. How many seconds is that? =
12. 12.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
13. 13.⏱️ A program says “wait 500 ms”. How many seconds is that? =
14. 14.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
15. 15.⏱️ How many milliseconds is a wait of 1.4 seconds?
16. 16.⏱️ repeat 4 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
17. 17.⏱️ How many milliseconds is a wait of 0.8 seconds?
18. 18.⏱️ How many milliseconds is a wait of 0.4 seconds?
19. 19.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
20. 20.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
21. 21.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
22. 22.⏱️ How many milliseconds is a wait of 1 seconds?
23. 23.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
24. 24.⏱️ How many milliseconds is a wait of 2.4 seconds?
25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 1 second?
26. 26.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
27. 27.⏱️ repeat 5 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
28. 28.⏱️ How many milliseconds is a wait of 4.3 seconds?
29. 29.⏱️ repeat 10 times { buzzer ON; wait 100 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
30. 30.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 1 second?
31. 31.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
32. 32.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
34. 34.⏱️ How many milliseconds is a wait of 1.2 seconds?
35. 35.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
36. 36.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
37. 37.⏱️ repeat 6 times { buzzer ON; wait 900 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
38. 38.⏱️ repeat 6 times { buzzer ON; wait 200 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
39. 39.⏱️ How many milliseconds is a wait of 3.9 seconds?
40. 40.⏱️ A program says “wait 5500 ms”. How many seconds is that? =

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