ATM

Table of Contents Introduction Core Banking System Architecture 2.1 Double‑Entry Ledger Algorithms 2.2 Concurrency & Transaction Queuing 2.3 Deadlock Detection & Resolution ATM Network Architecture 3.1 ISO 8583 Messaging 3.2 Cash‑Dispensing Optimization 3.3 Replenishment & Route Planning Transaction Processing Algorithms 4.1 Two‑Phase Commit (2PC) 4.2 Real‑Time vs. Batch Settlement Security Algorithms 5.1 PIN Block Construction & Encryption 5.2 EMV Chip Transaction Flow Fraud Detection & Risk Scoring 6.1 Rule‑Based Engines 6.2 Machine‑Learning Anomaly Detection Cash Management Algorithms 7.1 Denomination Optimization 7.2 Forecasting Cash Needs Performance, Scalability, and Resilience Regulatory‑Compliance Automation 10 Future Trends & Emerging Tech 11 Conclusion 12 Resources Introduction Banking has always been a technology‑driven industry, but the scale and complexity of modern financial services have turned it into a massive, distributed computing problem. Every time a customer swipes a card, checks a balance on a mobile app, or walks up to an ATM, a cascade of algorithms works behind the scenes to: ...