LCD technology is basically slow, so for high frequencies they are
forced to work with memory. The customer thinks it is an advantage to
have memory or delayed display, but in true there is no other way to do
that.  You can't possible "see" a 50 MHz signal in real time on a LCD
screen.  Steve, to mess with your words, I would change the phrase "OK
(specially lower frequencies)." to "OK (only in lower frequencies)"...
:)  In the high frequency real time world there is nothing that can
substitute (until now) the good and old CRT, I am wrong?
Wagner.

> "Kosmerchock, Steve" wrote:
>
> Mark,
>
> I know Velleman ( www.velleman.be ) makes a small O-SCOPE
> using a PIC16C65 and a 240x64 graphics LCD. I own one,
> works OK (especially lower frequencies). The users manual has
> the schematic in the back. You might beable to download it from
> their website. If not let me know and I'll dig mine out and
> make a copy and either EMAIL it or FAX it.
>
> Best regards,
> Steve
>
> Steven Kosmerchock
> Father/Student/Engineering Technician
> www.geocities.com/researchtriangle/lab/6584
>
> "Great spirits have always encountered violent
> oppposition from mediocre minds."--A.Einstein
>
> -----Original Message-----
> From: mark templeman [mailto:marktempleman@FSMAIL.NET]
> Sent: Thursday, April 06, 2000 2:11 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: LCD Osciloscope
>
> Does anyone know of any circuits for a reasonable quality
> Oscilloscope based around an LCD graphics display
>
> Regards
>
> Mark Templeman