Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 817 · 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 7750 ms”. How many seconds is that? =
2. 2.⏱️ How many milliseconds is a wait of 2.9 seconds?
3. 3.⏱️ How many milliseconds is a wait of 3.7 seconds?
4. 4.⏱️ repeat 3 times { buzzer ON; wait 900 ms; buzzer OFF; wait 800 ms }
   How many milliseconds does this take in all?
5. 5.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 100 (c) 1000 (d) 10
6. 6.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
7. 7.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 350 ms }
   How many milliseconds does one blink (ON + OFF) take?
8. 8.⏱️ How many milliseconds is a wait of 3 seconds?
9. 9.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
10. 10.⏱️ repeat 2 times { buzzer ON; wait 600 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
11. 11.⏱️ repeat 10 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
12. 12.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
13. 13.⏱️ How many milliseconds is a wait of 2.3 seconds?
14. 14.⏱️ How many milliseconds is a wait of 0.7 seconds?
15. 15.⏱️ A program says “wait 250 ms”. How many seconds is that? =
16. 16.⏱️ loop forever { LED ON; wait 600 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
17. 17.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 16 seconds?
18. 18.⏱️ How many milliseconds is a wait of 0.2 seconds?
19. 19.⏱️ repeat 9 times { buzzer ON; wait 800 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
20. 20.⏱️ How many milliseconds is a wait of 4.5 seconds?
21. 21.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) blinks 500 times (c) pauses for half a second (d) waits 500 seconds
22. 22.⏱️ A program says “wait 4750 ms”. How many seconds is that? =
23. 23.⏱️ A program says “wait 9750 ms”. How many seconds is that? =
24. 24.⏱️ How many milliseconds is a wait of 0.9 seconds?
25. 25.⏱️ How many milliseconds is a wait of 3.3 seconds?
26. 26.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
27. 27.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 1800 ms }
    How many times does the LED blink in 8 seconds?
28. 28.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 4 seconds?
29. 29.⏱️ A program says “wait 7500 ms”. How many seconds is that? =
30. 30.⏱️ repeat 9 times { buzzer ON; wait 300 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
31. 31.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 1850 ms }
    How many times does the LED blink in 20 seconds?
32. 32.⏱️ A program says “wait 500 ms”. How many seconds is that? =
33. 33.⏱️ repeat 5 times { buzzer ON; wait 300 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
34. 34.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 800 ms }
    How many milliseconds does one blink (ON + OFF) take?
35. 35.⏱️ How many milliseconds is a wait of 3.6 seconds?
36. 36.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
37. 37.⏱️ loop forever { LED ON; wait 200 ms; LED OFF; wait 200 ms }
    How many times does the LED blink in 2 seconds?
38. 38.⏱️ repeat 3 times { buzzer ON; wait 500 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
39. 39.⏱️ How many milliseconds is a wait of 2.2 seconds?
40. 40.⏱️ A program says “wait 3500 ms”. How many seconds is that? =

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