Technical book, computer organization and architecture designing, 9th edition, PDF format, open on a desk, cluttered with notes and pens, wooden desk lamp shining soft light, solo male student, young adult, messy brown hair, black-rimmed glasses, worn-out jeans, white T-shirt, sneakers, sitting, leaning forward, focused expression, dimly lit study room, bookshelf filled with technical books, a few empty coffee cups, scattered papers and folders, warm color tone, shallow depth of field, realistic rendering.