The company was founded in 1979[2] by Hal Prewitt as a technology firm to develop, market and support computer related products and services.

"[5] PC Magazine called them "Workhorses of Performance Computing"[6] and "High-quality construction..breaks the speed barrier for access times"[7] and asked "Will other manufactures follow suit?"

Software ranged from simple mortgage interest calculations, word processing, games and utilities to advanced payroll, accounting and industry specific applications.

Core was able to fill this niche because IBM had developed the machines with engineering and scientific applications in mind, while business programs such as construction, agriculture, and manufacturing were not generally available.

[15] Computer systems of this design are extremely or most likely impossible to have the ability to swap components, obtain support from other vendors or upgrade to better configuration/another model unless that option is available from the original manufacturer.

After a five-year effort, in September 1982 they announced the availability of the first hard disk drives[16] and local area network (LAN)[17] for the IBM 5100 Series.

Due to the complexity and the successful reverse engineering of the systems, resulted in captive market as they were the only organization able to provide an upgrade path for these IBM owners.

Not only did this allow users to continue using the application software they had already developed, but it increased processing speed by a factor of two to ten times, and reduced maintenance cost up to 90%.

Core desired a major partner and selected Control Data Corporation (CDC) to assist with the introduction of the drives for the PC marketplace.

Core discovered that a general lack of understanding existed among the news media and users regarding technology of different computer and mass storage systems.

In response, Core began placing considerable emphasis on user education, which resulted in a major contribution to computer industry.

To help buyers and for industry education, Core developed the DiskP program, later replaced by the COREtest[24] (DOS based), to identify sub-standard products by providing a visual demonstration of the speed and comparative measurements of hard disk drives and controllers.

As these programs were provide without charge and freely available from BBS, computer magazines and dealers, it is believed there was an installed base of over million copies worldwide promoting Core technology and education.