i don't think anyone could possibly explain u the steps of it in a forum but if u want a start, u need to design a chip layout first deciding what its going to do. then create the chip, mount it on a board. well after that u may design the casing for it. I think this simple question of yours is kind of hard to manage, I mean the big hardware companies do it with 100ths of ppl. if u want to do it by yourself i think first of all u need to do more reading and become aware that u cannot do everything that pops in your head. frame = easy grab a plastic give it a shape, or wood, sand it or something on/off switch go grab 3 cables and a switch, solved. screen heh i don't think u can do it by hand hahahahah go find yourself a java programer and start learning the language go buy a cell phone that has java games, and start building one yourself and see u in 10 years....