100111001001

100111001001 is a 12-bit binary sequence commonly encountered in digital systems as an example of a fixed-width bit pattern. In unsigned form it represents the decimal number 2505. In hexadecimal, it is 0x9C9. If interpreted as a 12-bit two's-complement value, the pattern corresponds to -1591.

Structurally, the sequence can be read as three hexadecimal nibbles: 1001 1100 1001, which correspond to the digits 9, C, 9. The first and last nibble are the same (1001), and the middle nibble is 1100. The Hamming weight, or number of 1 bits, is six.

In practical contexts, such a pattern may appear in teaching materials to illustrate binary-to-decimal conversion, bit masking, or representation of small integers in 12-bit registers. In hardware and embedded systems, 12-bit widths are used in some legacy or specialized subsystems, though most contemporary architectures employ 8, 16, or 32-bit data paths.

Note that 100111001001 does not designate a widely recognized constant, code, or standard by itself; its significance depends on the surrounding context, such as the encoding scheme, data format, or the particular machine architecture in which it appears. As with many binary sequences, its value and interpretation can change with the chosen representation (unsigned, signed, fixed-point, or custom encoding) and the operational environment.