Concept

The first step to building a computer is to develop an initial concept. What does accessing the computer allow your players to accomplish? What level is it? Is it simple or complex? Is it magical, technological, or hybrid? Does it have a virtual intelligence, or is it a living creature? Does it use remote access points, or does it require direct physical access? You should brainstorm the computer's name and description, as that can help you plan its vulnerabilities and countermeasures.