Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 96 · 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) blinks 500 times (b) turns the LED off (c) pauses for half a second (d) waits 500 seconds
2. 2.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
3. 3.⏱️ How many milliseconds is a wait of 5 seconds?
4. 4.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 700 ms }
   How many milliseconds does one blink (ON + OFF) take?
5. 5.⏱️ A program says “wait 4250 ms”. How many seconds is that? =
6. 6.⏱️ How many milliseconds is a wait of 1.9 seconds?
7. 7.⏱️ repeat 8 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
   How many milliseconds does this take in all?
8. 8.⏱️ repeat 9 times { buzzer ON; wait 200 ms; buzzer OFF; wait 400 ms }
   How many milliseconds does this take in all?
9. 9.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 1300 ms }
   How many times does the LED blink in 10 seconds?
10. 10.⏱️ repeat 9 times { buzzer ON; wait 700 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
11. 11.⏱️ A program says “wait 2500 ms”. How many seconds is that? =
12. 12.⏱️ repeat 2 times { buzzer ON; wait 800 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
13. 13.⏱️ repeat 3 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
14. 14.⏱️ A program says “wait 250 ms”. How many seconds is that? =
15. 15.⏱️ How many milliseconds are in 1 second? (a) 10 (b) 60 (c) 1000 (d) 100
16. 16.⏱️ How many milliseconds is a wait of 0.1 seconds?
17. 17.⏱️ repeat 9 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
18. 18.⏱️ How many milliseconds is a wait of 3.9 seconds?
19. 19.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
20. 20.⏱️ A program says “wait 7000 ms”. How many seconds is that? =
21. 21.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
22. 22.⏱️ How many milliseconds is a wait of 3 seconds?
23. 23.⏱️ How many milliseconds is a wait of 1 seconds?
24. 24.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 7 seconds?
25. 25.⏱️ How many milliseconds is a wait of 0.8 seconds?
26. 26.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
27. 27.⏱️ How many milliseconds is a wait of 1.8 seconds?
28. 28.⏱️ How many milliseconds is a wait of 1.3 seconds?
29. 29.⏱️ A program says “wait 5000 ms”. How many seconds is that? =
30. 30.⏱️ loop forever { LED ON; wait 500 ms; LED OFF; wait 500 ms }
    How many times does the LED blink in 7 seconds?
31. 31.⏱️ How many milliseconds is a wait of 0.5 seconds?
32. 32.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 5 seconds?
33. 33.⏱️ A program says “wait 6000 ms”. How many seconds is that? =
34. 34.⏱️ How many milliseconds is a wait of 1.6 seconds?
35. 35.⏱️ repeat 10 times { buzzer ON; wait 600 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
36. 36.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?
37. 37.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
38. 38.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
39. 39.⏱️ How many milliseconds is a wait of 2.4 seconds?
40. 40.⏱️ A program says “wait 3000 ms”. How many seconds is that? =

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