00111001

00111001 is an eight-bit binary string that can be interpreted in several ways depending on context. As an unsigned binary number, it represents the decimal value 57. In hexadecimal notation it is 0x39. The bit pattern can be stored in a single byte and may appear in data streams, encoding schemes, or low-level programming tasks.

In the ASCII character set, the byte 0x39 corresponds to the character '9'. ASCII reserves the range 0x30 to 0x39 for the digits 0 through 9, so the binary 00111001 is the binary form of the digit '9'. This mapping is common in text encoding and is preserved in UTF-8 for ASCII-compatible characters.

As a signed value in eight-bit two's complement representation, 00111001 still represents +57. The pattern is not inherently a special symbol beyond these usual interpretations; its meaning depends on the surrounding protocol or software, such as whether it is treated as a numeric value, a character code, or part of a bitfield.

In other representations or encodings, the same bit pattern can correspond to different data if the byte order or encoding scheme changes. For example, in multi-byte sequences, endianness affects how a group of bytes is interpreted, but the single byte 00111001 remains 57 as an unsigned value and 0x39 as a hexadecimal code. Related topics include the binary numeral system, ASCII encoding, and hexadecimal notation.