0b00000001

0b00000001 is a binary literal used in many programming languages to denote the binary number 00000001. The 0b prefix signals base-2 digits, and the eight digits shown form a single 1 bit in the least significant position.

Numerically, it represents 1 in unsigned form. In an eight-bit two's complement representation it also represents +1. The pattern is commonly used as a bit flag with only the lowest-order bit set.

Common uses include bitwise operations, bit masks, and configuring hardware registers. Operations such as shifts can transform the value: 0b00000001 << 1 equals 0b00000010, while 0b00000001 >> 1 equals 0b00000000 on an eight-bit width.

Language support for binary literals varies. The 0b prefix is supported in many modern languages (for example, Python, JavaScript, and newer C++ standards), but some languages and older standards do not recognize it. When not supported, hexadecimal or decimal equivalents must be used.

In ASCII, the byte 0x01 corresponds to the control character Start of Heading (SOH); it is non-printable. The relation 0x01 and 0b00000001 reflects the same bit pattern in different representations.