Abstract: Logic synthesis device for LSI having a configuration divided into a plurality of hierarchical blocks specified by hierarchical design comprises a logic synthesis section which uses the logic description information describing the logic operation contents for each of the hierarchical blocks, information about location and area of the hierarchical blocks constituting the LSI and correspondence information between the logic operation contents described in the logic description information and the logic gate circuits physically described on LSI in order to make logic synthesis in and between hierarchical blocks and to adjust the delay times between the hierarchical blocks based on the block placement information.

Abstract: A diagnostic system comprises a plurlity of remote computers connected to a switched telephone network to which a diagnostic center and an adminstrator's station are also connected. The diagnostic center includes a data processor for preparing a diagnostic file for each of the remote computers and storing it into a first memory. Each diagnostic file contains a remote computer's identification, a remote computer's telephone number, diagnostic commands, expectation values and an administrator's telephone number. The center transfers files from the first memory to a second memory and sequentially recalls data in each file in the second memory. The center first sends dialing information to the network according to the recalled computer's telephone number to establish a first path to a computer identified by the recalled identification and then sends out test signals according to the recalled diagnostic commands to the identified computer to detect responses from it.