There are only two digits in the Binary system, namely, 0 and 1. The numbers in the binary system are represented to the base 2 and the positional multipliers are the powers of 2. The left most bit in the binary number is called as the Most Significant Bit (MSB) and it has the largest positional weight. The right most bit is the Least Significant Bit (LSB) and has the smallest positional weight.
Example:
The binary sequence (11101)2 has the decimal equivalent:
(1101)2 = 1 x 23 + 1 x 22 + 0 x 21 + 1 x 20
= 8 + 4 + 0 + 1
= (13)10
