The arrangement according to this invention comprises a universal micro circuit (IC) in digital signal processing for example for storing and transmitting information in a telecommunication system. The circuit has many applications, although the field of application according to the exemplifying embodiment included concerns the storage and transmission of information between switch modules in a telephone exchange. A mircro-circuit (IC) of the given kind includes on one single silicon plate input/output units (IO) for adaption to different types of external units, memory modules (MM) which can be combined for varying memory-capacity requirements and applications, and gate-matrix part (GA) with the aid of which a large number of logic functions can be implemented. The proportion of the silicon plate area used for the memory part is considerably greater than the proportion of the area used for the gate-matrix part. The circuit enables very large scale integration to be achieved and affords in a small physical space, one single silicon plate, a high packing density, few external connections between silicon plates, which results in few internal connections on superior system levels, short propagation times and low power consumption.
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