Concerning creating systems , there's essential to understand the contrasting roles of top-level design and low-level design . Top-level design provides a broader view of the system , describing the core modules and their connections without granular implementation specifics. Conversely , Detailed

Even in a UPI-heavy economy, almost every billing counter in India still keeps a physical cash drawer under the counter, from kirana stores to pharmacies and restaurants. Card and QR payments have not removed cash, they have just made the drawer less busy. A proper cash drawer beats a loose box beca