Integrating Peripheral Devices in an ATM
Project Background
An Automated Teller Machine (ATM) is a computerized telecommunications device that provides customers access to financial transactions in a public space without the need for a human clerk or bank teller. Most modern ATMs identify customers by having them insert a card that contains a unique card number and additional security information. Using an ATM, customers can access their bank accounts in order to make cash withdrawals and check their account balances.

ATMs have an embedded PC in the center of the machine that connects to multiple serial peripherals such as card readers, keypads, touch screens, receipt printers, cash dispensers, etc. The PC connects to these serial devices via a multiport serial board. Some embedded PCs require Low Profile boards due to the limited space available inside a typical ATM.
  In China, more and more banks are setting up ATMs to service growing numbers of customers. A local Chinese ATM vendor has even entered the international playing field by winning a large foreign market share and wide customer recognition. To maintain its competitive edge domestically and abroad, the vendor wanted a multiport serial board provider with high product quality, on-time shipment, and high product reliability.  
  Moxa's Solution  
  Moxa offers a variety of multiport serial boards for the ATM industry. The CP-104UL is a 4-port RS-232 Universal PCI board that adheres to Low Profile specifications, which means it can fit into any type of PC. Besides dispensing cash, some ATMs offer other services, such as cash deposits and bill payments that require additional peripheral devices. For these ATMs, Moxa offers multiport serial boards that are capable of connecting more than 4 serial devices. ATMs also use a wide range of connection interfaces such as ISA and PCI Express. To meet the needs of such a diverse clientele, Moxa offers the C104H (ISA) and CP-104EL (PCI Express) multiport serial boards. Some PCs that come with embedded modules will also use Moxa's PC/104 module (CA-104) or PC/104-Plus module (CB-114) to increase the number of COM ports. Some ATMs need smaller PCs because most of their internal space is being occupied by currency boxes. These mini PCs or shoebox PCs need Low Profile boards such as the CP-104UL. With Moxa's solutions, they can customize ATM functions to fulfill to their customers' demands.  
  Application Topology  
The CP-104UL can extend connections between PCs and serial devices
ATM systems need high product reliability and quality. Moxa products are
guaranteed to be of the highest quality with each one backed by a 5-year warranty.
  Product Implemented  
Over 800 Kbps data throughput for top performance
921.6 Kbps maximum baudrate for super fast data transmission
128-byte FIFO and on-chip H/W, S/W flow control
Compatible with 3.3/5V PCI and PCI-X
Drivers provided for Windows (Vista, 2003, XP, 2000), WinCE 5.0, Linux, and Unix
15 KV ESD protection on the board
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