Computer science textbook, open book, desktop, study room, warm lighting, wooden table, comfortable chair, messy notes, scattered papers, coffee cup, computer keyboard, mouse, CPU model, motherboard diagram, circuit board, wires, microprocessor, control unit, arithmetic logic unit, registers, bus structure, von Neumann architecture, Harvard architecture, RISC and CISC designs, pipelining, cache memory, instruction cycle, system interconnects, I/O systems, peripherals, storage devices, input devices, output devices, 3/4 composition, soft focus, warm color tone, shallow depth of field.