Hi Paul

If you want to read the RS232 output of tracy's EC EM and write graphics
data to a say a 6" LCD in Basic.
This makes it a piece of cake. I have the Maximite board. Very tidy for this
app.
Below are links to Geoff the designer, a kit supplier and the LCD I use.

http://geoffg.net/maximite.html
http://www.altronics.com.au/index.asp?area=item&id=K9550
http://www.ebay.com.au/itm/290567288324?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2648#ht_3458wt_977

In relation to what I wrote earlier about the Board you should look at.

Backend in 'C'.
Front end interpreter in 'Basic' (interrupts available in Basic).
Lattest Microchip 32 bit proc running at 80MHz- so math etc fantastic
Direct VGA/Composite output using DMA.
Card reader built in.
20 in/out and through basic can read AD, period, frequency, time etc.

Soooo simple, exactly what you were asking for some months back.

You will love it.