摘要:
An editor in a CAD system, which assigns different command functions to each of a plurality of buttons, enables commands for editing processing such as “movement”, “deletion”, and copying” to be issued by the corresponding buttons, and adds one polygon and another polygon by a first button or subtracts them from each other by a second button and, further, even when one of the commands of editing processing is being executed, makes it possible to perform a “change”, “cancellation”, “confirmation”, etc. of the mode of processing by operation of the corresponding buttons, thereby enabling change of a once input parameter or initialization of once input information, whereby the efficiency of work in pattern design using a pointing device can be improved.
摘要:
A circuit board design aid is achieved by generating a shield pattern for a wiring pattern including a pattern element in a circuit board by increasing a width of a geometry of the pattern element by an amount corresponding to a shield pattern spacing set as a preset pattern generation condition. A prohibition region is generated based on a geometry of an element for which a clearance check is to be performed located around the wiring pattern and a clearance condition between the element for performing a clearance check and the wiring pattern. Then, the shield pattern is generated by excluding the geometry of the prohibition region from the geometry of the basic shield pattern element.
摘要:
An editor in a CAD system, which assigns different command functions to each of a plurality of buttons, enables commands for editing processing such as “movement”, “deletion”, and copying” to be issued by the corresponding buttons, and adds one polygon and another polygon by a first button or subtracts them from each other by a second button and, further, even when one of the commands of editing processing is being executed, makes it possible to perform a “change”, “cancellation”, “confirmation”, etc. of the mode of processing by operation of the corresponding buttons, thereby enabling change of a once input parameter or initialization of once input information, whereby the efficiency of work in pattern design using a pointing device can be improved.
摘要:
A computer-aided designing of a wiring pattern of a printed circuit board includes the steps of acquiring an electrical property of a component pin of a component to be connected to a wiring pattern by referring to a database, and defining a wiring-length limit for the wiring pattern in conformity with the electrical property of the component pin.