2114 Static RAMs... - test-drb@ccmp.vtda.org

17 Sep 2004

at least it was CMOS versions of TTL logic...

-----Original Message-----
From: Tom Jennings &lt;tomj(a)wps.com&gt;
Sent: Sep 17, 2004 5:20 PM
To: "General Discussion: On-Topic Posts Only" &lt;cctech(a)classiccmp.org&gt;
Cc: "General Discussion: On-Topic and Off-Topic Posts"
&lt;cctalk(a)classiccmp.org&gt;
Subject: RE: 2114 Static RAMs...

On Wed, 2004-09-15 at 11:16, Ed Kelleher wrote:
...
  At 05:00 PM 9/13/2004, you wrote:
 >When I was designing I/O boards for spaceborne computers I once saw
 >what happens when most inputs are left floating on CMOS designs. This
 >was a design full of (~30) 54HCxx ICs. 
...
  gak!   54xx IC's  --  No wonder the space program
cost so much! 
And running TTL off batteries! Ouch!