Johnny Rosenberg wrote: > here's a > new try, which I tested several times: > > http://ubuntuone.com/p/W8l/
I just looked at 7400-IEC-1.sym. Some comments: * some lines of invisible text is not on 100 grid. * the footprint attribute is invisible * pin labels are invisible * if pin labels were visible, they'd collide with the box * pin length is 200 units. IMHO, these lengthy pins result in awkward artwork, when there is little space on the canvas. This is of course a matter of taste. * the slot attribute is invisible. I like to make it visible, so it is explicitly shown on the schematic and can be edited on mouse click. * there is no value attribute --> this attribute is used in the bill of materials * the visible string 7400 is simple text. That way, it cannot be edited in the schematic. In a real circuit it should read 74HC00 or whatever flavor of TTL logic should be used. * the supply nets are implicitly given with the net attribute. IMHO, this approach hides information that should be visible in the schematic. I prefer to put the power pins in a dedicated 74er power symbol. * suggestion: If the symbol complies to a specific IEC norm. How about a comment, that refers to the specific norm? * what is the intended use of the attribute device=7400 ? ---<)kaimartin(>--- -- Kai-Martin Knaak Öffentlicher PGP-Schlüssel: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x6C0B9F53 _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user