> What are you talking about? How in the world is a DOS that can only run a single app at a time better than a system that can run dozens of apps at once? How i

> What are you talking about? How in the world is a DOS that can only run a single app at a time better than a system that can run dozens of apps at once? How is non-multitasking a better experience? The person you were replying to was specifically talking about POS (Point of Sale) systems. Retail workers use these systems to do repetitive tasks as quickly as possible. Legacy systems tend to be a lot faster (and more keyboard accessible) than modern web-based systems. It is not uncommon for retail workers to have a standard Windows workstation these days so they can reference things on the company website, but then also shell into a proper POS system.