The document is a presentation on automated teller machines (ATMs) given by Nrusingh Charan Ray. It introduces ATMs and their purpose of allowing customers to access their bank accounts without a human teller. The presentation outlines the history, parts, workings, networking, hardware/software, security features, and innovations of ATMs. It concludes that ATMs have become very useful for society by being introduced widely around the globe to serve customers like students, businessmen, and others more conveniently.