Re: [CAD_CAM_EDM_DRO] Re: Controlling VFDs from your PC?

there are some serial & parallel port D/A and A/D projects at
http://www.epanorama.net/links/project_pc.html#pc_parallel

to save on the pin count you might bit-bang a serial bus on the parallel
port and use ine of the serial loading D/A chips kinda like this one ,its a
long URL and may wrap so cut-n-paste everything between the brackets
[
http://www.e-insite.net/ednmag/index.asp?layout=article&stt=000&articleid=CA170222&pubdate=10/11/2001
]

you can also run something like this from the serial port
[
http://archives.e-insite.net/archives/ednmag/reg/1997/030397/05DI_03.htm
]

Brian

> How do you produce an analog signal of varying voltage from one of
> your computer's ports?