August 1980 issue of I/O, featuring a special on microcomputer peripherals. This is an old magazine stored at home. There is aging deterioration (stains, yellowing, discoloration, and page folds on the body, cover, edges, etc.), but there is no problem with reading the text. I have flipped through it, and I don't think there are any writings, markings, or missing pages, but please forgive me if there are any. Please consider the photos for reference. Thank you for looking.