Physical Cash
Physical cash refers to tangible currency in the form of coins and banknotes issued by a government or central bank, used as a medium of exchange for goods and services. It represents a direct, physical form of money that does not require electronic systems or intermediaries for transactions. Historically, it has been the primary means of payment, though its usage has declined with the rise of digital alternatives.
Developers should understand physical cash when working on financial technology (fintech) applications, payment systems, or simulations that involve real-world economic interactions. It's relevant for projects involving cash handling, ATM software, point-of-sale systems, or educational tools that model traditional monetary systems. Knowledge of physical cash helps in designing systems that integrate with or transition from cash-based economies to digital solutions.