| 摘要 |
It comprises several processing units, a priority allocation network (BSAUOK-BSIUOK, BSMYOK) to which each of these units is connected, and an omnibus line linking all the units in order to provide communication between any two of them. The apparatus is provided to enable each unit, concurrently with other units, to communicate with another via the omnibus line and at a speed depending on the sending unit itself and not on the limits imposed on all the communications. In order to determine, at any instant, which among several units simultaneously seeking to set up a communication, should have the priority, each unit comprises priority-determining circuits (Fig.) inserted into the said network according to a sequence which determines their relative priorities for the communications. Each circuit comprises means (15, 17, 18) for indicating that the unit in question requires communication with another unit, as well as means (19, 22, 23) allowing asynchronous transfer of information by this unit, via the omnibus line (10), when no unit having a higher priority is transmitting information nor is attempting to transmit it. <IMAGE>
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