25 Feb
2010
25 Feb
'10
6:22 a.m.
Date: Wed, 24 Feb 2010 23:18:11 -0800
From: hilpert at cs.ubc.ca
---snip---
I think they're were some PROM's in there, so it may be a programmed state
machine, but probably not much memory available considering everything else it
is doing.
The PROMs are for the 2901s. These do the things like the subtraction, inversion,
autocenter and run the display. Things like the digital numbers at the bottom
of the screen are all created by the 2901s. Remember, as a DSO, the data
is sampled and then put into the RAM. The 2901s then determine what
to do with that data on the screen. The PROMs have the instructions for
the 2901s to use.
Dwight
_________________________________________________________________
Hotmail: Trusted email with Microsoft?s powerful SPAM protection.
http://clk.atdmt.com/GBL/go/201469226/direct/01/