0001001000000111
0001001000000111 is a 16-bit binary sequence commonly written as 0001 0010 0000 1111 to emphasize nibble boundaries. In hexadecimal this sequence is 0x120F, and in decimal it equals 4623. As an unsigned 16-bit integer, it represents the value 4623; in two's complement notation it is also 4623 since the most significant bit is 0, indicating a nonnegative number.
The final nibble being 1111 shows that the lowest four bits are all set, while the remaining
Endianness notes: if stored in memory as a 16-bit value, the byte order depends on the system.