On Jan 23, 2009, at 3:29 PM, Tony Duell wrote:
Then there are
fun details like this one: ethanol is a nice harmless
cleaning fluid for many things, including most plastics. But it will
turn plexiglas matte.
I remember some HP displays [1] where the data sheet warned you not to
clean them with 'alcohol' (whether it meant ethanol, or any alcohol I
don't know, and given the prices of the displays I was not going to
try
it!). Apparently alcohol would attack the plastic package and cloud up
the viewing lenses.
[1] These were 4 character, 14 segment LED 'starbust' displays with a
built-in character generator ROM and scanner. You had 2 address
lines and
some data lines, and you sent it ASCII codes. The numnber '1414'
springs
to mind for the smallest/simplest one. I think some other company
(Siemens?) made compatile LED dot matrix displays at one point too.
HPDL-1414, I've used a few in projects here. They're damn nice
displays. The datasheet mentions nothing about alcohol, though.
-Dave
--
Dave McGuire
Port Charlotte, FL