56 years ago today, on September 2, 1969 (July 21, 1969 in the lunar calendar), the first ATM was unveiled in New York. September 2, 1969, on this day in 1969, the first automated teller machine (ATM) in the United States made its public debut at the Bank of New York. ATM is the abbreviation of Automatic Teller Machine, which means automatic teller machine. It is a highly sophisticated mechatronics device that uses magnetic cards or smart IC cards to store user information, enter passwords through encryption keyboards (EPP), and then verify and conduct various transactions through the bank's internal network. The emergence of ATMs has reduced the work pressure of bank counters and provided humans with a safe and convenient financial service experience. The functions of ATM mainly include basic functions such as cash withdrawal, cash deposit, balance inquiry, transfer from one bank or another bank, and password modification; Some multi-purpose ATMs also provide a series of convenient services such as passbook printing, statement printing, check deposit, envelope deposit, payment, and recharge. The ATM can be divided into two parts: hardware system and software system Hardware system: The hardware system consists of the lower half of the safe and the upper half of the electronic cabinet to form the main frame; the safe contains the cash processing module-the movement, and the electronic cabinet contains PC, card reader, flow printer, receipt printer, communication control board or input output (IO) control board; the outside of the machine is the panel part; The panel part is designed according to ergonomic principles, taking into account the reading card position, keyboard position, gate position, display position and the height and angle used by the user. Software system: The software system is generally divided into three levels; the first level is the media program level, which is the underlying driver of each module; the second level is the dynamic library level, which is responsible for encapsulating the media program and providing interfaces to ATMC(ATM Control Software); The third is ATMC, which is responsible for scheduling each module downward and communicating with the banking system upward to complete the entire service control process. There are four options for operating systems: DOS, OS/2, LINUX, and WINDOWS. Due to the single-tasking nature of DOS, it eventually lost to OS/2 in the ATM platform market competition. Its proportion is currently less than 1%. It is only used on old machines from a few manufacturers such as Express. OS/2 used to be the mainstream, but now IBM no longer provides OS/2 support, so it has also lost the market. LINUX is taking off. Now the mainstream of the market is WINDOWS system, and most of them use embedded XP systems. Such a classic machine is worth remembering and affects people's lives.