Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 265 · 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 4.4 seconds?
2. 2.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 600 ms }
   How many milliseconds does this take in all?
3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
4. 4.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
5. 5.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 350 ms }
   How many milliseconds does one blink (ON + OFF) take?
6. 6.⏱️ How many milliseconds is a wait of 4.5 seconds?
7. 7.⏱️ How many milliseconds is a wait of 2.1 seconds?
8. 8.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) pauses for half a second (d) turns the LED off
9. 9.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 800 ms }
   How many milliseconds does one blink (ON + OFF) take?
10. 10.⏱️ How many milliseconds is a wait of 3.1 seconds?
11. 11.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
12. 12.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
13. 13.⏱️ loop forever { LED ON; wait 1450 ms; LED OFF; wait 550 ms }
    How many times does the LED blink in 8 seconds?
14. 14.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
15. 15.⏱️ How many milliseconds is a wait of 4.6 seconds?
16. 16.⏱️ repeat 2 times { buzzer ON; wait 500 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
17. 17.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
18. 18.⏱️ How many milliseconds is a wait of 5 seconds?
19. 19.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
20. 20.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
21. 21.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
22. 22.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
23. 23.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
24. 24.⏱️ repeat 5 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
25. 25.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 10 seconds?
26. 26.⏱️ How many milliseconds is a wait of 1.9 seconds?
27. 27.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
28. 28.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
29. 29.⏱️ How many milliseconds is a wait of 2.3 seconds?
30. 30.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
31. 31.⏱️ How many milliseconds is a wait of 2.9 seconds?
32. 32.⏱️ loop forever { LED ON; wait 1700 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 10 seconds?
33. 33.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
34. 34.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
35. 35.⏱️ A program says “wait 250 ms”. How many seconds is that? =
36. 36.⏱️ A program says “wait 1750 ms”. How many seconds is that? =
37. 37.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
38. 38.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
39. 39.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
40. 40.⏱️ How many milliseconds is a wait of 1.8 seconds?

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