Jocelyn Tait  
  Electrical and Computer  
Capital T Tarot
        Tarot Electronics
        In 1973, I left Bell Northern Research to begin a small business.   At first, Tarot Electronics survived on consulting , the design and prototype construction of small modules and custom interfaces, and on the preparation of PCB master artwork. 
Robotic Arm                    In 1974, I was joined by my husband, Frank Tait, and we designed, MIMIC® a Mutable InterfaceTM based on the Intel 8008 microprocessor, which had just been introduced.   Our initial boards were built with preproduction chips supplied by Microsystems International Limited.
                  As our business developed, the demands on the processor rapidly outgrew its capabilities.  After a thorough evaluation of the competitors, we switched to Intel's new improved microprocessor, the 8080, with an immediate redesign of the MIMIC boards. 
                  Shortly after the design of the 8080 board was finished, we discovered that, when coupled with the MicroTerminalTM and our tiny, extensible operating system, ProcessTM, it made a useful and inexpensive one-board computer, so we offered it at a reasonable price to the membership of the newly formed Ottawa Computer Group.  It was accepted with enthusiasm, and used by the purchasers as a personal computer.   We sold several hundred of these, beginning in April, 1977.
                  In 1977, I presented a paper, "The Bedroom Computer," to the IEEC&E, describing the MIMIC in a minimum, portable configuration, which was, essentially a personal computer. 
                  In my work at Systemhouse, I discovered that the MIMIC boards were readily adaptable to effective multiprocessor configurations. With very little modification, nine 8080 CPUs, joined via the MIMIC bus and a PDP 11, were made to serve an Analytical Plotter
                  In 1978, while continuing to work with Tarot, I began a new business, Symbionics, as an opportunity to develop some unusual designs.  Symbionics continued to support the MIMIC system, and my design of a MC68000-based board included the necessary interfacing to allow the 68000 to work efficiently with the 8080s already installed.  The first use of the board was intended to serve a real time graphics data acquisition system. 
                   In 1983, when I moved to the U.S. and retired, further development ceased, but MIMICs still in service continue to be useful to their owners.