Save guides, add subjects and pick up where you left off with your BBC account. Hexadecimal close hexadecimalA number system using 16 symbols from 0-9 and A-F, also known as base 16 and hex.

Save guides, add subjects and pick up where you left off with your BBC account. Consider a simple black and white image. If 0 is black (or off) and 1 is white (or on), then a simple black and ...