Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 608 · 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 3.9 seconds?
2. 2.⏱️ How many milliseconds is a wait of 0.3 seconds?
3. 3.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
   How many times does the LED blink in 7 seconds?
4. 4.⏱️ How many milliseconds is a wait of 2.8 seconds?
5. 5.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
   How many times does the LED blink in 1 second?
6. 6.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) blinks 500 times (d) pauses for half a second
7. 7.⏱️ How many milliseconds is a wait of 1.3 seconds?
8. 8.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 10 (d) 1000
9. 9.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
   How many milliseconds does one blink (ON + OFF) take?
10. 10.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 4 seconds?
11. 11.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
12. 12.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
13. 13.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 4 seconds?
14. 14.⏱️ A program says “wait 500 ms”. How many seconds is that? =
15. 15.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
16. 16.⏱️ repeat 2 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
17. 17.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
18. 18.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
19. 19.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
20. 20.⏱️ How many milliseconds is a wait of 2.6 seconds?
21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 1900 ms }
    How many times does the LED blink in 10 seconds?
22. 22.⏱️ How many milliseconds is a wait of 4 seconds?
23. 23.⏱️ How many milliseconds is a wait of 1.4 seconds?
24. 24.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
25. 25.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
26. 26.⏱️ How many milliseconds is a wait of 0.8 seconds?
27. 27.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
28. 28.⏱️ How many milliseconds is a wait of 3.8 seconds?
29. 29.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
30. 30.⏱️ How many milliseconds is a wait of 3.3 seconds?
31. 31.⏱️ How many milliseconds is a wait of 3.4 seconds?
32. 32.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
33. 33.⏱️ How many milliseconds is a wait of 1 seconds?
34. 34.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
35. 35.⏱️ How many milliseconds is a wait of 1.6 seconds?
36. 36.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
37. 37.⏱️ How many milliseconds is a wait of 3 seconds?
38. 38.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
39. 39.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
40. 40.⏱️ How many milliseconds is a wait of 2.2 seconds?

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