The first program on any microcontroller board blinks an LED: turn it ON, wait, turn it OFF, wait, and repeat. Waits are in milliseconds (1 s = 1000 ms). One blink takes the ON time plus the OFF time, so 500 ms ON and 500 ms OFF is 1000 ms per blink — 10 blinks in 10 seconds. A “repeat 5 times” block runs only 5 times, so its total time is 5 × one round.
Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
🏁 Lesson 23 test
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
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🖨️ Electronics Worksheet: Blink Programs and Delays
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