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📚 About BMI Calculator
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on height and weight. It's used as a screening tool to identify potential weight problems.
BMI Categories:
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Underweight: BMI < 18.5
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Normal Weight: BMI 18.5 - 24.9
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Overweight: BMI 25 - 29.9
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Obese: BMI ≥ 30
Logic Gates Implementation:
This calculator uses digital logic gates (AND, OR, NOT, XOR, NAND, NOR) to determine BMI categories through simple boolean checks. Below are plain-language explanations of how each gate is used here:
AND: "Both must be true" — used to check ranges. Example: to be Normal we require BMI ≥ 18.5 AND BMI < 25. Both conditions must hold.
OR: "Either one or both" — used for combined checks like "Healthy or slightly high" where either condition being true is enough.
NOT: "Invert" — flips a signal. For example, NOT(underweight) is true when the underweight check is false.
XOR (Exclusive OR): "Exactly one" — true when exactly one input is true (used to show mutually exclusive cases like normal XOR overweight).
NAND: "NOT of AND" — true unless both inputs are true. It's a quick way to detect when a strict combined condition is NOT met.
NOR: "NOT of OR" — true only when none of the inputs are true; useful to confirm all signals are off.
In short: the calculator turns BMI cutoffs into simple true/false signals (is BMI < 18.5? is BMI >= 25? etc.). Then it combines those signals with gates like AND and OR to decide which category the BMI falls into.
⚠️ Disclaimer: This tool is for educational purposes only.