Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 793 · 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.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
2. 2.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
   How many milliseconds does this take in all?
3. 3.⏱️ How many milliseconds is a wait of 1.9 seconds?
4. 4.⏱️ repeat 6 times { buzzer ON; wait 600 ms; buzzer OFF; wait 700 ms }
   How many milliseconds does this take in all?
5. 5.⏱️ A program says “wait 750 ms”. How many seconds is that? =
6. 6.⏱️ A program says “wait 7750 ms”. How many seconds is that? =
7. 7.⏱️ loop forever { LED ON; wait 350 ms; LED OFF; wait 50 ms }
   How many times does the LED blink in 10 seconds?
8. 8.⏱️ A program says “wait 6750 ms”. How many seconds is that? =
9. 9.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) turns the LED off (c) pauses for half a second (d) blinks 500 times
10. 10.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
11. 11.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
12. 12.⏱️ How many milliseconds is a wait of 3.4 seconds?
13. 13.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 6 seconds?
14. 14.⏱️ loop forever { LED ON; wait 800 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
15. 15.⏱️ How many milliseconds is a wait of 3.9 seconds?
16. 16.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
17. 17.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
18. 18.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 100 (d) 10
19. 19.⏱️ How many milliseconds is a wait of 1.6 seconds?
20. 20.⏱️ How many milliseconds is a wait of 2 seconds?
21. 21.⏱️ How many milliseconds is a wait of 3.1 seconds?
22. 22.⏱️ How many milliseconds is a wait of 1.4 seconds?
23. 23.⏱️ A program says “wait 3250 ms”. How many seconds is that? =
24. 24.⏱️ How many milliseconds is a wait of 4.6 seconds?
25. 25.⏱️ repeat 10 times { buzzer ON; wait 300 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
26. 26.⏱️ How many milliseconds is a wait of 3.8 seconds?
27. 27.⏱️ How many milliseconds is a wait of 4.2 seconds?
28. 28.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
29. 29.⏱️ A program says “wait 250 ms”. How many seconds is that? =
30. 30.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
31. 31.⏱️ How many milliseconds is a wait of 1 seconds?
32. 32.⏱️ How many milliseconds is a wait of 0.5 seconds?
33. 33.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 700 ms }
    How many times does the LED blink in 3 seconds?
34. 34.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 6 seconds?
35. 35.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
36. 36.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
37. 37.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
38. 38.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
39. 39.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
40. 40.⏱️ repeat 3 times { buzzer ON; wait 400 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?

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