Its Bulletin Board System based marketplace utilized Delphi as a platform for an on-line database of products where buyers and sellers bought, sold and traded computers.
The company pioneered efforts to create a fully automated, on-line auction and trade systems for general commerce and eventually turned into an Internet-based business.
The husband and wife started the business on the dining room table and worked together on it steadily for the next 10 years.
Hall's father had been involved with modems from the earliest days of datacomm - so each brought special skills to the project.
On advice from futurist Wes Thomas, the Boston Computer Exchange created a weekly price report - called the BoCoEx Index, a report on the High, Low and Closing Price on the Exchange for the most popular computer models.
Starting in 1983, this price list became a standard tool for assessing the value of computers in court cases, after market sales and in valuations of assets in corporate mergers and acquisitions.
The BoCoEx Index was also a regular feature on the Business Radio Network and was used to create a ten-year report on the price declines of popular computer models.
The book was a set of tools for creating a free standing computer trading enterprise in any city.
Among them were the Southern Computer Exchange, The NaComEx, and "seats" in such places as San Francisco, Virginia, Maryland, Los Angeles, New Jersey, New York, and as far afield as Santiago Chile, Stockholm and Leningrad in Russia.