Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 215 · 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 3.3 seconds?
2. 2.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
3. 3.⏱️ repeat 5 times { buzzer ON; wait 700 ms; buzzer OFF; wait 700 ms }
   How many milliseconds does this take in all?
4. 4.⏱️ What does “wait 500 ms” do? (a) pauses for half a second (b) waits 500 seconds (c) blinks 500 times (d) turns the LED off
5. 5.⏱️ How many milliseconds is a wait of 2.9 seconds?
6. 6.⏱️ How many milliseconds is a wait of 3.7 seconds?
7. 7.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 500 ms }
   How many milliseconds does one blink (ON + OFF) take?
8. 8.⏱️ A program says “wait 4500 ms”. How many seconds is that? =
9. 9.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 800 ms }
   How many milliseconds does this take in all?
10. 10.⏱️ How many milliseconds is a wait of 2.4 seconds?
11. 11.⏱️ repeat 8 times { buzzer ON; wait 100 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
12. 12.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
13. 13.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
14. 14.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 3 seconds?
15. 15.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
16. 16.⏱️ How many milliseconds is a wait of 4 seconds?
17. 17.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
18. 18.⏱️ How many milliseconds is a wait of 0.9 seconds?
19. 19.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
20. 20.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
21. 21.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
22. 22.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
23. 23.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
24. 24.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
25. 25.⏱️ How many milliseconds is a wait of 4.1 seconds?
26. 26.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
27. 27.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
28. 28.⏱️ repeat 10 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
29. 29.⏱️ How many milliseconds is a wait of 4.2 seconds?
30. 30.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
31. 31.⏱️ repeat 3 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
32. 32.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
33. 33.⏱️ How many milliseconds is a wait of 2.6 seconds?
34. 34.⏱️ How many milliseconds is a wait of 3.8 seconds?
35. 35.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 10 (d) 1000
36. 36.⏱️ How many milliseconds is a wait of 1.5 seconds?
37. 37.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 1700 ms }
    How many times does the LED blink in 20 seconds?
38. 38.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?
39. 39.⏱️ loop forever { LED ON; wait 1200 ms; LED OFF; wait 800 ms }
    How many times does the LED blink in 20 seconds?
40. 40.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 5 seconds?

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