Dwight Aplevich writes:
> Circuit_macros5.1.tar.gz has been copied into the incoming directory
> of ftp.tex.ac.uk. Its expanded contents are to replace the contents
> of graphics/circuit_macros. The copyright is almost public domain.
>
> From the README:
> ...
> This is a set of macros for drawing high-quality line diagrams to
> include in TeX, LaTeX, or similar documents. The macros were
> originally intended for electric circuit diagrams containing
> fundamental elements, amplifiers, transistors, and basic logic gates,
> but several tools and examples for other types of diagrams are also
> included. The advantages and disadvantages of such a system are
> similar to those of TeX itself, which is macro-based, non-wysiwyg,
> and which uses ordinary character input.
>
> The macros evaluate to drawing commands in the pic little language,
> which is easy to read and learn. The programming elements in pic are
> well suited to line drawings requiring parametric or conditional
> components, fine tuning, significant geometric calculations or
> repetition, or to drawings that are naturally block structured or
> tree structured. Arbitrary formatted text can be included. Free
> TeX- and LaTeX-compatible interpreters for m4 and pic are readily
> available for Unix and PC machines.
>
> View or print the file examples.ps in the examples directory, or try
> http://ece.uwaterloo.ca/~aplevich/Circuit_macros/
>
> A collection of examples and hints intended for his colleagues has
> been produced by Alan Robert Clark at http://ytdp.ee.wits.ac.za/cct.html
> ...
> CHANGES:
> Version 5.1: Signal-flow graph (directed graph) macros. More consistent
> rot3Dz. Work-around for a bug in some pic processors invoked by the
> battery macro and for an arc instability invoked by the fuse macro.
> Modified ground, dimension_, par_, label macros, b_current, diode,
> transformer. New macros gpar_, ujt, scr, contact, relay. Document
> fixes and additions. Changes to examples for portability.
> ...
i have installed the files as requested: thanks for the upload.
Robin Fairbairns
For the CTAN team
