**Harvard Architecture** Computer, Harvard architecture, CPU, internal bus, external bus, control unit, arithmetic logic unit, registers, memory, instruction register, program counter, von Neumann bottleneck, pipelining, cache memory, futuristic laboratory, circuit board, wires, microchips, blueprints, 3D modeling, neon lights, high-tech, sleek design. **Von Neumann Architecture** Computer, Von Neumann architecture, CPU, control unit, arithmetic logic unit, registers, memory, instruction register, program counter, shared bus, fetch-decode-execute cycle, stored-program concept, modern office, desk, chair, papers, books, programming languages, coding, coffee cup, window, cityscape, daytime, warm lighting.