The Pcb Design Library

摘要

From schematic capture to layout to manufacturing, no company can hope to create any kind of monetary efficiency without first planning, building and maintaining a parts and symbols library. Among the large corporations, it is well understood that cutting a few minutes from a design flow means massive increases in profit margins. But smaller companies sometimes do not see the same picture. The result of not having this one tool at the users' disposal is virtual mayhem when it comes to meeting deadlines and ultimately to making profits on the designs sent to manufacturing.rnA good way to look at this is through a simple time chart that breaks up the amount of time spent designing, versus the amount of time performing repetitive drafting tasks such as building symbols and geometries for a schematic and layout. To better study this, I utilized a small schematic and layout design that already existed and set to the task of recreating the symbols. In the first design, I created a handful of symbols and parts from scratch while copying in the rest to mimic a realistic scenario within a company that has no library. Most often, designers in thesernenvironments copy symbols, parts and geometries from old designs and then build the missing symbols and parts. In the second design, I pulled in the missing handful of parts and symbols from a library. The results of my time usage are shown in FIGURE 1.