“many computers use a slightly different convention for representing negative numbers and also have a convention called a floating point to represent numbers that have decimal points. (The position of the decimal point “floats” relative to the digits, so that a fixed number of digits can be used to represent a wide range of numbers.) The particular representation schemes are often chosen in such a way as to simplify the logic of the circuits that perform arithmetical operations, or to make it easy to convert from one representation to another.”