4 Jun
2007
4 Jun
'07
2:38 p.m.
Grant Stockly wrote:
> Someone built one of my Altair replica PCBs and went to great lengths to
> make sure the date code on the ICs was older than 1975. They also
> sourced the old brown cylindrical resistors.
I've been known to do that, but for much more trivial examples - when
I built my 1976-design Elf, I did the best I could on chips (my CPU
and memory were of the period, but I have not yet tracked down a 74L00
for the clock divider circuit), but I was happy to have a bin of
vintage brown cylindrical resistors for the pullups. I had to
compromise on the regulator - the oldest one I could find in my junk
bin was an LM340T.
Obviously, the computer doesn't care, but I wanted something that
would have looked as if I had made it when I first got into computers
as a kid. A complete indulgence to nostalgia.
-ethan