The relay trainer is inspired by the single board microprocessor "trainers" of the 1970s / 1980s, but with a custom 8-bit CPU implemented with 83 electromechanical DPDT relays.

As with other recent relay computers, the memory is implemented in semiconductors to keep the relay count low. Microchip PIC microprocessors are used to implement this memory and the front panel user interface.

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