0x1E3F

0x1E3F is a hexadecimal literal commonly used in computing to denote the numeric value 7743 in decimal. In 16-bit form, its binary representation is 0001 1110 0011 1111, illustrating how the value is laid out in lower-level contexts.

In programming languages, a 0x prefix signals a hex literal. Therefore, 0x1E3F can appear in code in languages such as C, C++, Java, JavaScript, and Python, where it represents the integer 7743. Developers use such literals for various purposes, including defining constants, bit masks, and flags, or as explicit values in memory-addressing or protocol fields.

Common uses include defining bit masks for bitwise operations (for example, applying a mask like value & 0x1E3F), setting hardware register values in firmware or device drivers, and configuring options in low-level software. Because hex literals align with binary representations, they are convenient for interpreting and manipulating individual bits or groups of bits.

In Unicode notation, a related concept exists with code points written as U+1E3F, which encodes a specific character in the Unicode standard. The 0x1E3F form and the U+1E3F form both convey the same underlying numeric value but pertain to different systems: hexadecimal literals in programming versus Unicode code point notation for characters.