Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 992 · 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 50 ms; LED OFF; wait 200 ms }
   How many times does the LED blink in 1 second?
2. 2.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
   How many times does the LED blink in 5 seconds?
3. 3.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 1000 (c) 100 (d) 60
4. 4.⏱️ How many milliseconds is a wait of 0.1 seconds?
5. 5.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 700 ms }
   How many milliseconds does this take in all?
6. 6.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
7. 7.⏱️ 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
8. 8.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
   How many times does the LED blink in 4 seconds?
9. 9.⏱️ A program says “wait 5250 ms”. How many seconds is that? =
10. 10.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
11. 11.⏱️ A program says “wait 9250 ms”. How many seconds is that? =
12. 12.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
    How many milliseconds does one blink (ON + OFF) take?
13. 13.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
14. 14.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 1450 ms }
    How many times does the LED blink in 14 seconds?
15. 15.⏱️ repeat 6 times { buzzer ON; wait 500 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
16. 16.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 300 ms }
    How many times does the LED blink in 6 seconds?
17. 17.⏱️ How many milliseconds is a wait of 2.4 seconds?
18. 18.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
19. 19.⏱️ How many milliseconds is a wait of 2.2 seconds?
20. 20.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
21. 21.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
22. 22.⏱️ A program says “wait 4000 ms”. How many seconds is that? =
23. 23.⏱️ How many milliseconds is a wait of 3.6 seconds?
24. 24.⏱️ How many milliseconds is a wait of 1.6 seconds?
25. 25.⏱️ How many milliseconds is a wait of 2 seconds?
26. 26.⏱️ How many milliseconds is a wait of 0.5 seconds?
27. 27.⏱️ How many milliseconds is a wait of 0.3 seconds?
28. 28.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
29. 29.⏱️ repeat 8 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
30. 30.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
31. 31.⏱️ How many milliseconds is a wait of 4.1 seconds?
32. 32.⏱️ How many milliseconds is a wait of 1.4 seconds?
33. 33.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
34. 34.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
35. 35.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
36. 36.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 200 ms }
    How many milliseconds does one blink (ON + OFF) take?
37. 37.⏱️ repeat 7 times { buzzer ON; wait 100 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
38. 38.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
39. 39.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
40. 40.⏱️ A program says “wait 9500 ms”. How many seconds is that? =

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