111101101

111101101 is a nine-bit binary numeral that is often encountered in discussions of digital logic and binary representations. As an unsigned binary number, it represents the decimal value 493. The pattern contains seven ones and two zeros, with the bits arranged from most significant to least significant as 1-1-1-1-0-1-1-0-1.

If interpreted as a signed value in nine-bit two's complement notation, the same pattern corresponds to -19. This follows from inverting the bits to 000010010 and adding one, or equivalently recognizing that the leading bit indicates a negative value in a nine-bit signed system.

Nine-bit widths are uncommon in modern architectures, which typically use 8, 16, or 32 (or 64) bits. Nevertheless, nine-bit patterns appear in certain historical hardware interfaces, specialized processors, and educational materials as test vectors for exploring bit manipulation, masking, and encoding schemes.

As a standalone sequence, 111101101 does not denote a widely recognized term, product, or standard beyond serving as a binary literal and a representative example of how a binary pattern can have different numerical interpretations depending on context.

See also: Binary numeral system; Two's complement; Bitwise operations.