A set of two books: Microcomputer Application Manual, Volume 1 (I/O Techniques) and Volume 2 (Software). Author: Yojiro Yokoi Publisher: Radio Gijutsu-sha ・Slight yellowing and stains on the outer box due to aging. ・The main body (book) is in very good condition, with no folds or writing. Almost no stains. ・A beautiful item perfect for reading or collecting. A valuable technical document published in 1978 during the dawn of microcomputers, it still enjoys strong popularity in fields such as electronic hobby projects, retro PCs, and technical history research. It is a highly valuable classic that allows you to learn about old I/O techniques and software design concepts. ・A rare set of volumes. ・Popular with microcomputer/electronic hobbyists, researchers, and collectors. ・In good condition, recommended for preservation. The product will be shipped with waterproof packaging. Thank you for viewing. #Electricity, Computers, Books #ElectronicHobbyProjects #Computer #Programming #ShowaRetro #Vintage #RareBooks #Microcomputer #Microcomputer #RetroPC #TechnicalBooks #ElectronicCircuits #ControlEngineering #EmbeddedSystems #ComputerMaterials #RetroElectronics #TechnicalManual #OutofPrintBooks #YojiroYokoi