Most of the major technological breakthroughs in consumer electronics have really been built around the same basic process: converting conventional analog information into digital information. The digital camera is one of the most remarkable instances of this shift. Conventional cameras depend entirely on chemical and mechanical processes–you don't even need electricity to operate them. On the other hand, all digital cameras have a built-in computer, and all of them record images electronically. As digital imaging technology has improved, digital cameras have rapidly become more popular.