INTERCHANGEABLE INTERFACE CIRCUIT STRUCTURE

摘要

Interface circuitry is provided for connecting data signal handling circuitry to data signal responsive units, the handling circuitry having sets of option circuit terminals formed for engagement with associated portions of the interface circuitry, at least one option circuit terminal of each set being responsive to associated address data signals to identify its location. The interface circuitry includes a mounting arrangement formed to enable portions of the circuitry to be moved into engagement with associated ones of the option circuit terminals. The interface circuitry also includes first circuitry formed to have portions engage first ones of the option terminals.