Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 714 · 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 9750 ms”. How many seconds is that? =
2. 2.⏱️ A program says “wait 8750 ms”. How many seconds is that? =
3. 3.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
4. 4.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 1000 (d) 10
5. 5.⏱️ loop forever { LED ON; wait 850 ms; LED OFF; wait 200 ms }
   How many milliseconds does one blink (ON + OFF) take?
6. 6.⏱️ A program says “wait 5500 ms”. How many seconds is that? =
7. 7.⏱️ How many milliseconds is a wait of 2.5 seconds?
8. 8.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
   How many times does the LED blink in 1 second?
9. 9.⏱️ A program says “wait 3750 ms”. How many seconds is that? =
10. 10.⏱️ What does “wait 500 ms” do? (a) blinks 500 times (b) turns the LED off (c) waits 500 seconds (d) pauses for half a second
11. 11.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 7 seconds?
12. 12.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
13. 13.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 1000 ms }
    How many milliseconds does one blink (ON + OFF) take?
14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 250 ms }
    How many milliseconds does one blink (ON + OFF) take?
15. 15.⏱️ How many milliseconds is a wait of 2.8 seconds?
16. 16.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 1950 ms }
    How many times does the LED blink in 18 seconds?
17. 17.⏱️ How many milliseconds is a wait of 0.1 seconds?
18. 18.⏱️ How many milliseconds is a wait of 1 seconds?
19. 19.⏱️ loop forever { LED ON; wait 700 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
20. 20.⏱️ How many milliseconds is a wait of 4.7 seconds?
21. 21.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
22. 22.⏱️ repeat 6 times { buzzer ON; wait 100 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
23. 23.⏱️ How many milliseconds is a wait of 4.4 seconds?
24. 24.⏱️ repeat 8 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
25. 25.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
26. 26.⏱️ A program says “wait 2250 ms”. How many seconds is that? =
27. 27.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 300 ms }
    How many milliseconds does one blink (ON + OFF) take?
28. 28.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
29. 29.⏱️ How many milliseconds is a wait of 2.7 seconds?
30. 30.⏱️ How many milliseconds is a wait of 1.6 seconds?
31. 31.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 600 ms }
    How many times does the LED blink in 8 seconds?
32. 32.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
33. 33.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 950 ms }
    How many milliseconds does one blink (ON + OFF) take?
34. 34.⏱️ How many milliseconds is a wait of 3.2 seconds?
35. 35.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
36. 36.⏱️ How many milliseconds is a wait of 4.9 seconds?
37. 37.⏱️ How many milliseconds is a wait of 2.1 seconds?
38. 38.⏱️ How many milliseconds is a wait of 0.3 seconds?
39. 39.⏱️ How many milliseconds is a wait of 0.4 seconds?
40. 40.⏱️ How many milliseconds is a wait of 1.5 seconds?

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