6530581447547989836.jpg。4 Bit Calculator | Built Using Individual Transistors。1995 IBM model M (71G4644) Made by Lexmark 8/24/95 Quiet。。。Logic,Automata,and Computational ComplexityThe Works of Stephen A.CookBruce M.Kapron,Editor即購入可です。8-bit CPU control logic: Part 2 - YouTube