Digital design and computer architecture book, PDF 2nd edition, open on a desk, surrounded by scattered notes and pens, solo male student, late 20s, messy brown hair, glasses perched on nose, casual wear, white t-shirt, blue jeans, sneakers, studying in a modern university library, quiet atmosphere, soft overhead lighting, rows of bookshelves in the background, wooden table with metal legs, ergonomic chair, laptop and tablet nearby, subtle shadows, realistic textures.