Main Content

The Gray-1, A homebrew CPU exclusively composed of memory

This article presents an very original computer. Its CPU is only made of ROM, but it can execute complex programs, such as finding all the solutions of the 8-queens problem. Since the 1970s, computers are essentially composed of microprocessors, memory, and peripherals such as keyboard, mouse, display, network interface The microprocessor plays a central role of running the programs located in the working memory. Most people, even among computer experts, see the microprocessor as a black box whose operation is too complex to be understood. Creating a microprocessor from very simple components is a good way to deeply understand how a computer works.”

Link to article