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https://www.online-toolz.com/tools/hex-to-binary-converter.php

이진수 체계, 즉 2진수 체계는 0과 1의 두 기호를 사용하여 숫자 값을 나타냅니다.좀 더 구체적으로 말하자면, 일반적인 밑수 2 체계는 기수가 2인 위치 표기법입니다.논리 게이트를 사용하는 디지털 전자 회로에 간단하게 구현되기 때문에 이진 시스템은 모든 최신 컴퓨터에서 내부적으로 사용됩니다.

In mathematics and computer science, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a–f) to represent values ten to fifteen. For example, the hexadecimal number 2AF3 is equal, in decimal, to (2 × 163) + (10 × 162) + (15 × 161) + (3 × 160) , or 10,995. Each hexadecimal digit represents four binary digits (bits) (also called a "nibble"), and the primary use of hexadecimal notation is as a human-friendly representation of binary coded values in computing and digital electronics. For example, byte values can range from 0 to 255 (decimal) but may be more conveniently represented as two hexadecimal digits in the range 00 through FF. Hexadecimal is also commonly used to represent computer memory addresses.