Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 902 · 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.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 550 ms }
   How many milliseconds does one blink (ON + OFF) take?
2. 2.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
3. 3.⏱️ How many milliseconds are in 1 second? (a) 1000 (b) 100 (c) 60 (d) 10
4. 4.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 750 ms }
   How many milliseconds does one blink (ON + OFF) take?
5. 5.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
6. 6.⏱️ A program says “wait 6250 ms”. How many seconds is that? =
7. 7.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
   How many milliseconds does this take in all?
8. 8.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
   How many times does the LED blink in 2 seconds?
9. 9.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
10. 10.⏱️ How many milliseconds is a wait of 3.2 seconds?
11. 11.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 1400 ms }
    How many times does the LED blink in 16 seconds?
12. 12.⏱️ How many milliseconds is a wait of 2.6 seconds?
13. 13.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 2 seconds?
14. 14.⏱️ How many milliseconds is a wait of 0.2 seconds?
15. 15.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
16. 16.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
17. 17.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
18. 18.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
19. 19.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
20. 20.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
21. 21.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
22. 22.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
23. 23.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
24. 24.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 8 seconds?
25. 25.⏱️ repeat 8 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
26. 26.⏱️ How many milliseconds is a wait of 0.3 seconds?
27. 27.⏱️ How many milliseconds is a wait of 0.9 seconds?
28. 28.⏱️ How many milliseconds is a wait of 4 seconds?
29. 29.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
30. 30.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
31. 31.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
32. 32.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
33. 33.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
34. 34.⏱️ How many milliseconds is a wait of 3.1 seconds?
35. 35.⏱️ How many milliseconds is a wait of 4.8 seconds?
36. 36.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
37. 37.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
38. 38.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
39. 39.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 1 second?
40. 40.⏱️ A program says “wait 750 ms”. How many seconds is that? =

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