0x01

0x01 is the hexadecimal representation of the decimal number 1. In most programming and digital contexts, a value written as 0x01 denotes a single byte with binary form 00000001, meaning only the least significant bit is set.

Common uses include as a bit mask or flag in bitwise operations. For example, value & 0x01 tests the least significant bit, while value | 0x01 can set it. In memory representations, an integer value of 1 may be stored in little-endian form as 0x01 0x00 0x00 0x00 within a 32-bit sequence.

In data formats and network protocols, 0x01 may appear as a type identifier, a version indicator, or a simple boolean-like flag, depending on the specific specification. Because hex notation is widely used to express byte-level data, 0x01 appears frequently in examples and documentation as a minimal nonzero value.

In Unicode and ASCII, the code point U+0001 corresponds to the control character Start of Heading (SOH). This character is non-printable and has limited practical use in ordinary text, but it is part of the standard character set.

Languages and tools use the 0x prefix to denote hexadecimal literals, which helps programmers distinguish base-16 values from decimal. The meaning of 0x01 is therefore highly context-dependent, but it generally represents the numeric value 1 and commonly serves as a basic building block in low-level data handling and bitwise operations.