This method uses the most significant bit (the one on the far left) to represent the sign of a number; if 0, the number is positive, if 1, the number is negative. The rest of the bits are used to determine the number’s decimal magnitude. This method reverses the sign of a number by reversing the sign bit (set it to 1 if 0 and to 0 if 1). A drawback of this method is that the number 0 is represented using two different bit combinations.
