Infographic shows the layered stack of computer systems from application software down to physics.The image shows an Infographic about the computer system stack, arranged as a vertical sequence of labeled horizontal bands read from top to bottom. It shows how higher level software depends on lower level hardware and physical layers. From top to bottom, the bands are labeled "Application Software" with a small callout showing text greater than "Hello world!", "Operating Systems" with a laptop icon, "Architecture" with a block grid icon, "Micro architecture" with two blocks with opposing arrows between them, "Logic" block with a plus sign, "Digital Circuits" with logic gate icon, "Analog Circuits" with operational amplifier icon with plus and minus inputs, "Devices" with transistor symbol and "Physics" with atom icon.Bus Interface