Banking   Sigma Data Systems, Inc. has been assisting financial institutions with their computing needs since 1982. We have been involved in programming and system support for back office applications, ATM networks, and remote communications with branches as well as to the Federal Reserve Board and other financial institutions. We have assisted in the integration of computer systems, teller syst- ems, ATM locations, and document processing systems. Contact Sigma Data Systems, Inc. for more information about how we may be able to support your data processing needs.