Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 28 · 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.⏱️ 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
2. 2.⏱️ How many milliseconds is a wait of 3.3 seconds?
3. 3.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
4. 4.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 200 ms }
   How many milliseconds does this take in all?
5. 5.⏱️ repeat 2 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 400 ms }
   How many milliseconds does this take in all?
6. 6.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 600 ms }
   How many milliseconds does this take in all?
7. 7.⏱️ How many milliseconds is a wait of 4.3 seconds?
8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 800 ms }
   How many milliseconds does one blink (ON + OFF) take?
9. 9.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
   How many times does the LED blink in 1 second?
10. 10.⏱️ How many milliseconds is a wait of 2.5 seconds?
11. 11.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
12. 12.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
13. 13.⏱️ How many milliseconds is a wait of 1.7 seconds?
14. 14.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
15. 15.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
16. 16.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 10 (c) 100 (d) 1000
17. 17.⏱️ How many milliseconds is a wait of 4.7 seconds?
18. 18.⏱️ How many milliseconds is a wait of 1.2 seconds?
19. 19.⏱️ How many milliseconds is a wait of 0.3 seconds?
20. 20.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 10 seconds?
21. 21.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
22. 22.⏱️ How many milliseconds is a wait of 3.7 seconds?
23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 10 seconds?
24. 24.⏱️ A program says “wait 8250 ms”. How many seconds is that? =
25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
26. 26.⏱️ How many milliseconds is a wait of 2.6 seconds?
27. 27.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
28. 28.⏱️ How many milliseconds is a wait of 4.6 seconds?
29. 29.⏱️ How many milliseconds is a wait of 1 seconds?
30. 30.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
31. 31.⏱️ How many milliseconds is a wait of 2.4 seconds?
32. 32.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
33. 33.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
34. 34.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 9 seconds?
35. 35.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
36. 36.⏱️ How many milliseconds is a wait of 4.8 seconds?
37. 37.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 250 ms }
    How many times does the LED blink in 8 seconds?
38. 38.⏱️ How many milliseconds is a wait of 2.3 seconds?
39. 39.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
40. 40.⏱️ How many milliseconds is a wait of 3.9 seconds?

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