ELI5: Explain Like I'm 5

Offset binary

Offset binary is a way of counting numbers using the binary system, which is a system that only uses two numbers, 0 and 1. With offset binary, 0 can represent negative numbers too. Each number is split up into what are called "bits", and each bit can be either a 0 or a 1. When a 0 represents a negative number, then the first bit is the sign bit, and will be a 0 if the number is negative, and a 1 if the number is positive. The rest of the bits are then used to count up from 0 to represent the numbers.