This technical report describes the computerized information management system used at the Community Care Organization for Dependent Adults (CCODA) of the On Lok Senior Health Services in San Francisco's Chinatown (California). A background perspective on information systems in business, government, hospitals, and local community service agencies is given. The development of On Lok's information management system is described with emphasis on their specific needs and requirements. The hardware used in On Lok's system is described and diagrammed, including its central processing unit, printers, data storage, terminals, and remote capabilities. The firmware (i.e., operating system, programming languages, and word processing) is also described. The software, categorized by the fiscal management component, client management component, and the integrated database is described in detail. A discussion section focuses on the costs, benefits, utility, and cost effectiveness of computerization. Four recommendations to service providers considering computerization are listed. A summary of the On Lok system completes the document. (BL)