On Fri, 14 Nov 1997 16:35:52 GMT GIBSON RJ <r164f@SMSERVER2.ULST.AC.UK>
writes:
>For my final year degree project I am going to
>build an LED display matrix,capable of displaying
>moving messages. Some sort of Microprocessor
>system is needed to control the display matrix.
>Because of the multiplexing method that is going
>to be used to control the display,a fast PIC with
>the following facilities is required :-
>
>- plenty of I/O lines.
>
>- an A/D converter (as it's also going to be
>  connected to a temperature sensor).
>
>- Serial comms facilities to allow connection to
>  a PC via RS 232 serial port.
>
>- It must be capable of accessing external RAM as
>  this is where the binary patterns representing
>  the message will be stored.
>
>I would appreciate any recommendations on what
>type of PIC would be most suitable for this
>application.
>
I am currently in the process of doing a very similiar project, but it
doesn't have an a/d
interface. The display is 7 rows by 80 columns. Input via rs232. Messages
will be
displayed directly from input or from serial ram. The character paterns
are hard coded
in the microcontroller. I am using 16c63.
The project is far from complete as I am just doing it as a hobby
project. (Read takes
forever to get done). But I do have a working prototype with minimal
functions.

Jeff