PURPOSE: To constitute a system suitable for a logical simulation, by constituting a status section storing connecting information of a logical circuit and the circuit status with a plurality of storage blocks and operating units so that a parallel processing can be possible for the operation.

CONSTITUTION: A control section 5 controls the processing process for the entire device. Data corresponding to an event table are stored in an event section 6 and the data are transmitted to a status section 7 as required. The status section 7 is constituted with a plurality of blocks for possible pipeline processing and data corresponding to an element table, and input value table and an output table are stored in the section 7. An operation section 8 consists of a plurality of operation units, the decision of a new status value of elements is executed in parallel and the result is transmitted to the event section 6.