  In the emergence of transformative global economy, information system has
became a necessity in businesses to obtain organizations operational
excellence, adaptation to new business models, improved decision making and
providing exceptional customer service, and eventual competitive advantage of
the enterprise setting while keeping business alliances. This paper presents
sectors of economy serviced by the pre-industry developers, explores the
evolution of computer-based information system designed and developed by
pre-industry system developers, and examine the effects of an information
system in business to countervail indentified recurring problems. Nineteen of
forty-six identified sectors of economy falls in the categories of primary,
secondary, tertiary, quarternary and quinary were the recipient of
computer-based system designed and developed. There have been several effects
of computer-based systems to organizations, including the implied relevance to
their business processes, continuum process improvement, business process
reengineering, business driver and facilitator, and customer satisfaction.
