Circuit designing apparatus, circuit designing method and timing distribution apparatus

摘要

A circuit designing apparatus includes a circuit information database to store information regarding a circuit, an automatic designing processing section to read out the information regarding the circuit from the circuit information database and designing the circuit for each predetermined unit to be processed, and a design information database to store design information obtained by the automatic designing processing section and including peculiarizing information of circuit elements, change history information representative of a history of changes of the circuit and terminal load and driving capacity information of the circuit. The circuit designing apparatus allows a desired circuit to be automatically produced, regenerated or optimized.