| 摘要 |
<p>A circuit designing system improves precision of fan out checking and further improves reasonableness of construction and consistency of derivation of a wiring capacity. Therefore, wiring lengths of respective wiring connected to respective output terminals of the circuit element of an objective circuit to be designed is predicted on the basis of a circuit design information and the wiring capacity is derived on the basis of the predicted wiring length. In the alternative, the wiring capacity is derived on the basis of the wiring length of respective wiring determined as a result of layout designing. The wiring capacity thus derived is used only for fan out checking, but also for logic synthesizing and logic simulation. <IMAGE></p> |
