111111110000

111111110000 is a binary string consisting of eight consecutive 1s followed by four 0s, for a total of 12 bits. When read as a binary numeral, it equals 0b111111110000. In common numeric notations it is written as 0xFF0 in hexadecimal, and its decimal value is 4080.

As a 12-bit value, 111111110000 has trailing zeros in its least significant bits, meaning the lower four bits are zero. This makes the pattern suitable as a boundary value in contexts requiring alignment, such as 16-byte boundaries in systems using hexadecimal addresses (for example, 0xFF0 is a multiple of 16).

In digital electronics and computer architecture, such patterns can serve as simple test vectors to exercise high- and low-signal conditions, or as a bitmask where the upper portion is set and the lower portion is cleared. The specific arrangement of ones followed by zeros is often used to illustrate bitwise operations like AND, OR, and XOR, or to test masking behavior in hardware and software.

In software, the string 111111110000 is also a sequence of characters '1' and '0' rather than a standard character code; as a value it is typically treated as binary data or a numerical value only when parsed as a number, not as ordinary text.