Company History

The company logo is a circle in a flattened diamond. Symbolically, this means "Unity in Intellect". The motto of our company is: YOUR MEMORY WILL LIVE FOREVER.

History of the Product Idea
The primary invention of the EPMO is the input and classification system for easy storage and retrieval of data. This has not been just a make over of any existing device, but rather a rethinking of how such a device should be used, what it should be used for, and how best to properly enter, store, and retrieve information with it. This is an entirely new and fresh view of the personal memory market, employing innovative thinking, the latest technologies, and a long range understanding of what the market can develop into with the right product.

The invention itself, an input/storage/retrieval device, and proprietary classification system for common types of personal data and information, has been created over multiple iterations by key individuals and consultants. DEXCOM's product idea began in 1984, while the inventor, Daniel Lexington, was returning to California from the Chicago CES show. On the plane home, he met Neville Hansen, a Canoga Park tapedeck distributor, who said, "I would like to have an electronic pocket-sized rolodex!" That set Daniel to work, and he has devoted a long time to developing the specifications for the product and in gathering whatever would be necessary to make this idea feasible, practical and economical.

The eventual design centered around a microcontroller that could supply the processing capability to store words in memory, write recall to display and direct data to the output transmission port. Much of the company's work from 1985 through 1988 was spent on working out a completely integrated user logic and control system that would make the unit extremely easy and convenient to use, while at the same time making the various system memory functions fully interactive.

The product was first called "Personal Micro", and later changed to Gendex, a word synthesized by Ram Pera. .

The original design had a number of mixed function memory keys along with separate keys for each letter and number.

The function keys eventually became patterned around a control diamond for ease and simplicity of use (our major design considerations). As it was being designed in an outer keyboard sense, it was simultaneously designed in a logic sense.

The product was further enhanced with a vertically oriented display to accommodate natural eye movements and four arrow keys centered around the FIND key.

In 1987-88, the four memory keys were symmetrically organized in the four corners of the unit. In 1989 the letter and number keys were combined into a single ergonometrically designed arrangement for hand-held use.

In 1990 advancement continued on the designs, with complete three dimensional layout of the components.

In 1995 the radical revision was to become a unit which folds into four parts, with the numbers in the center of the shortest fold, like Orion's belt. Most of the electromechanical dimensional design was done by this time.

It was not until 1995 that all the logic and all the help prompts were finally placed down in a 50 page paper spec. The development of GENDEX BANK was an important labor along the same process.

Ken Gourlay implemented the GENDEX logical prototype in java in 1999.

There are three more keys being added, DISPLAY, PROBE, and CONTROL.


The very top left corner (of the picture of various mockups, below) is 1984.


The very bottom picture, here to the far right bottom, was about 1991.