0x1C81

0x1C81 is a hexadecimal literal, a numeric value written in base 16 that uses the 0x prefix common in many programming languages. The digits 1, C, 8, and 1 form the hex number, which equals decimal 7297. Hex values like 0x1C81 are widely used to express constants, bit masks, memory offsets, and other data in software and hardware contexts.

In practical terms, 0x1C81 can serve as a 16-bit quantity. For example, it may appear as a bit mask or field identifier within a protocol or a low-level device driver. In color encoding schemes such as RGB565 (a 16-bit color format used in some displays), 0x1C81 represents a specific combination of red, green, and blue components. The color components can be extracted with the standard bit shifts and masks: red = (0x1C81 >> 11) & 0x1F, green = (0x1C81 >> 5) & 0x3F, blue = 0x1C81 & 0x1F. The exact resulting color depends on these calculations.

In other contexts, 0x1C81 may be encountered as a numeric identifier or offset within data structures, firmware, or communication protocols. It is not a widely standardized identifier by itself; its meaning is determined by the surrounding specification or code.

Note that Unicode code points are typically written in the form U+1C81, and while the hexadecimal value 0x1C81 can represent the same scalar, the canonical notation in Unicode documentation uses the U+ prefix.

See also: hexadecimal numerals, 0x prefix, decimal conversion, RGB565, bit masking.