This page contains some electronic circuits, programs, links and
related information about interesting devices to interface PCs with the
world outside. This includes a sound digitizer, a PC-smart card interface,
a magnetic stripe reader/writer, a bar code reader and a PC-PC link via COM
port without cables. Some of the designs are of my own and some others
aren't, but they have some common features: they are cheap and easy to do,
with no expensive or difficult-to-get parts. By now you can find
If you think that you have relevant information about any of these
subjects, e-mail me. I will include the information or a link to it in my
And remember, there are other interesting things
in the life...
E-mail: padilla at
domain "gae ucm es" (my PGP/GPG public key)
First version: 25-Jul-1996, last update: 23-Apr-2005
This link: http://www.gae.ucm.es/~padilla/extrawork/extrawork.html
Go to the parent page: Main page.